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.
[[25, -13, 9, -48], [24, 47, 42, 43, -50], [31, -28, 26, 38, 8], [-29, 38, 20, -27]]