Identify the divisor (the number you're dividing by) and the dividend (the number that is being divided into); the final answer is known as the quotient. For example, suppose you want to divide 0.12 (dividend) by 0.008 (divisor).
Move the decimal points in the dividend until it is a whole number. Thus, the decimal point in 0.12 is moved twice to become 12.
Move the decimal points in the divisor the same number of spots as the dividend's decimal points were moved. In the example, 0.008 becomes 0.8
Place a decimal point in the quotient exactly where the decimal point is for the dividend. This will help keep track of the final answer's decimal point location.
Move zeroes from the front of the divisor to the back of the dividend until the divisor is also a whole number. Thus, in the example, you are effectively dividing 120 by 8, so perform standard long division to obtain the final answer of 15.