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.
[[-4, 19, -2, 31, 50], [6, -18, 29, -28, -48], [-8, 37, -6, -32], [-12, -1, -16], [32, -46, -45, -12, 18], [-42, -5, 42, -1], [-12, 14, -20, -10], [-5, 38, -34, -28]]