Definition: 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.
Input: [[-21, -48, -13], [-11, -44, 13, 11, -5], [-49, 0, 30, 0, 15], [47, 28], [0, -48]]

[-13104, -346060, 0, 1316, 0]