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: [[-31, 10, 49], [-11, 45], [16, -13, -15, -24]]

[-15190, -495, -74880]