Dividing by fractions is just like multiplying fractions, except for one additional step.
To divide any number by a fraction:
First step: Find the reciprocal of the fraction.
Second step: Multiply the number by the reciprocal of the fraction.
Third step: Simplify the resulting fraction if possible.
Fourth step: Check your answer: Multiply the result you got by the divisor and be sure it equals the original dividend.