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: [[-15, -12, -49, 23], [-22, -19, 8, -23], [4, -50, -4, 33, -3], [13, -44, 3, 17]]

[-202860, -76912, -79200, -29172]