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.
[[5, 21, 11, -20, 32], [37, -5, -17, -12, -36], [31, -18, -30, 49, 32], [-31, -6, 1]]