Animate CC html5 canvas - add two user defined numbers

Good day, can anyone help me to do this...

Add two user defined numbers in Animate CC html canvas

I´m stuck, i think it should be easy but i can´t get it yet.

The program that I´m doing needs to resolve v=d/t

and the other modes of the formula but I can not retrieve

the user input to make the operations.

If you can help me to do even a sum in an animate html canvas file

I can do the rest, please help me!!