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.
[[-21, 14, -43, -37], [-38, -42, -9, 49, -4], [-28, -42, 45], [-14, -7, 48], [-37, -13, 1, -46], [46, 16], [17, -49, -45, 37, 28], [-31, 9, 31], [48, 49, 8]]