View source for Formula plotting-arithmetic cartoons

I defined special cartoons useful for study of arithmetics:

* addition_cartoon (and also a non-cartoon addition)
* subtraction_cartoon (and also a non-cartoon subtraction)

These cartoons show the process of adding and subtracting decimal numbers from the standpoint of arithmetics (performing addition digit by digit).


Examples:

  addition_cartoon( 2.345, 778.1 )    <-- shows addition of two numbrs as cartoon
  subtraction( 2.345, 778.1 )         <-- shows the result of subtraction of numbers (NOT cartoon)