Definition: In this task you will be given a list of lists, of numbers. For every inner list, you should multiply every number in that list and put the results in your answer. The output should be a list of numbers with the same length as the number of the lists in the input list.
Input: [[37, -39, 37], [-27, -44, -38, -47], [6, 44, 36, -7, -21], [-12, 18, -18, 48]]

[-53391, 2121768, 1397088, 186624]