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.
[[7, 46, 2, -37, -2], [31, 20, 13], [-13, 45, -20], [29, 30], [-6, -10, -10, -7]]