logic - How to make recursive function that multiply two positive numbers without using mutiplication operator -

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Some people ask me this question. I am confused that it is possible to multiply two numbers without using the multiplication operator? Plaz shares this idea.

Its very simple to see this code: 

  int times ( Int a, int b) {if (b == 1 || b == 0) returns; Then one + times back (a, - b); }   
 I did not test it. Share it only for consideration.

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