Long division

In arithmetic, long division is the standard procedure suitable for dividing simple or complex multidigit numbers. It breaks down a division problem into a series of easier steps. As in all division problems, one number, called the dividend, is divided by another, called the divisor, producing a result called the quotient. Long division is understood by most adults, including teachers and parents, who have been taught elementary arithmetic. It enables computations involving arbitrarily large numbers to be performed by following a series of simple steps.

Reference:
http://en.wikipedia.org/wiki/Long_division