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: [[45, -22, -12, -15], [33, 37, -27], [42, -14, 42, -48], [38, -42]]

[-178200, -32967, 1185408, -1596]