Division is the multiplication by the reciprocal or multiplicative inverse. In simpler language, to divide by a fraction change the division sign to multiplication and flip the fraction.
Division by a fraction is the same as multiplication by its reciprocal. The reciprocal of a number x is 1 over x. So the reciprocal of 2/5, for example, is 5/2.
A: Humans use the decimal or the 10 numbers systems since i guess we have ten fingers. And we do the mathematics using the ten digit numbers. Computers use the binary system two digits "0" "1" and it...