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.
[[-30, -1, 7, -9, -24], [25, 34, -28], [18, -25, -13], [-31, 37, 32, 21, 8]]