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.
[[42, -45, 12], [15, 34, -43, 37, -3], [18, 23, 44], [-13, 9, 10, -50], [42, -36, -38, -33]]