Mubashir has written a mysterious function that takes two numbers a and b and returns multiplication?. Solve the riddle of what Mubashir's function is by having a look at some of the examples below.
mubashir_function(0, 1) ➞ 0
mubashir_function(1, 2) ➞ 2
mubashir_function(10, 10) ➞ 1