# using pseudocode 
       # possible problem instances,  
      initialize algorithm_result = 1.
      check algorithm 
      f(solution) =? initial product
      check_sum = a+b+c+d+e = original real estate
      set answers and printout with resulting values 
      pseudocode: need test cases > small,medium, giant 
      pseudocode: need testcases within range of expected operation.
      pseudocode: are there any cases too small or large to be solved?

        # pretty print from autoindent and ased editor
        # Babylonian Combined Work Norm calculator
        # written on Windows XP on eTCL
        # working under TCL version 8.5.6 and 1.0.1
        # gold on TCL WIKI, 25feb2017
        package require Tk
        package require math::numtheory
        namespace path {::tcl::mathop ::tcl::mathfunc math::numtheory }
        set tcl_precision 17
        frame .frame -relief flat -bg aquamarine4
        pack .frame -side top -fill y -anchor center
        set names {{} { work norm (a) :} }
        lappend names { work norm (b) :}
        lappend names { work norm (c) : }
        lappend names { work production factor :  }
        lappend names { optional:  }
        lappend names { optional:  }
        lappend names { answers: production norm:  }
        lappend names { combined work norm  :} 
        foreach i {1 2 3 4 5 6 7 8} {
            label .frame.label$i -text [lindex $names $i] -anchor e
            entry .frame.entry$i -width 35 -textvariable side$i
            grid .frame.label$i .frame.entry$i -sticky ew -pady 2 -padx 1 }
        proc about {} {
            set msg "Calculator for Babylonian Combined Work Norm 
            from TCL WIKI,
            written on eTCL "
            tk_messageBox -title "About" -message $msg } 
       proc calculate {     } {
            global answer2
            global side1 side2 side3 side4 side5
            global side6 side7 side8 
            global testcase_number 
            incr testcase_number 
            set side1 [* $side1 1. ]
            set side2 [* $side2 1. ]
            set side3 [* $side3 1. ]
            set side4 [* $side4 1. ]
            set side5 [* $side5 1. ]
            set side6 [* $side6 1. ]
            set side7 [* $side7 1. ]
            set side8 [* $side8 1. ] 
            # initialize placeholder answer
            set combined_work_norm 1.
            set production_factor $side4
            set norm_a [/ $side1 60.]
            set norm_b [/ $side2 60.]
            set norm_c [/ $side3 60.]
            set combined_work_norm [+ [/ 1. $norm_a ] [/ 1. $norm_b ] [/ 1. $norm_c ] ]
            #set combined_work_norm [/ 1. $combined_work_norm ] 
            set combined_work_norm [/ 1. $combined_work_norm  ]
            set combined_work_norm [* $combined_work_norm  60. ]
            set side8 $combined_work_norm 
            set side7 [* $combined_work_norm  $production_factor ]
                    }
        proc fillup {aa bb cc dd ee ff gg hh} {
            .frame.entry1 insert 0 "$aa"
            .frame.entry2 insert 0 "$bb"
            .frame.entry3 insert 0 "$cc"
            .frame.entry4 insert 0 "$dd"
            .frame.entry5 insert 0 "$ee"
            .frame.entry6 insert 0 "$ff" 
            .frame.entry7 insert 0 "$gg"
            .frame.entry8 insert 0 "$hh" 
             }
        proc clearx {} {
            foreach i {1 2 3 4 5 6 7 8 } {
                .frame.entry$i delete 0 end } }
        proc reportx {} {
            global side1 side2 side3 side4 side5
            global side6 side7 side8
            global testcase_number 
            console show;
            puts "%|table $testcase_number|printed in| tcl wiki format|% "
            puts "&| quantity| value| comment, if any|& "
            puts "&| $testcase_number:|testcase_number | |& "
            puts "&| $side1 :|work norm (a) |   |&"
            puts "&| $side2 :|work norm (b) | |& "  
            puts "&| $side3 :|work norm (c) | |& "
            puts "&| $side4 :|work production factor : | |&"
            puts "&| $side5 :|optional: | |&"
            puts "&| $side6 :|optional: |  |&"
            puts "&| $side7 :|answers: production norm: |  |&"
            puts "&| $side8 :|combined work norm  |  |&" 
            }
        frame .buttons -bg aquamarine4
        ::ttk::button .calculator -text "Solve" -command { calculate   }
        ::ttk::button .test2 -text "Testcase1" -command {clearx;fillup 10.  20.   10. 27.  1.  1. 108.0 4.0}
        ::ttk::button .test3 -text "Testcase2" -command {clearx;fillup 10.  10.  20.  27.  1.  1. 108.0  4.0 }
        ::ttk::button .test4 -text "Testcase3" -command {clearx;fillup 20. 10. 10. 27. 1.  1. 108.0  4.0 }
        ::ttk::button .clearallx -text clear -command {clearx }
        ::ttk::button .about -text about -command {about}
        ::ttk::button .cons -text report -command { reportx }
        ::ttk::button .exit -text exit -command {exit}
        pack .calculator  -in .buttons -side top -padx 10 -pady 5
        pack  .clearallx .cons .about .exit .test4 .test3 .test2   -side bottom -in .buttons
        grid .frame .buttons -sticky ns -pady {0 10}
               . configure -background aquamarine4 -highlightcolor brown -relief raised -border 30
        wm title . "Babylonian Combined Work Norm Calculator"   

  puts " %| testcase $testcase_number | value| units |comment |%"
  puts " &| volume| $volume| cubic meters |based on length $side1 and width $side2   |&"