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, -28], [-41, -1, -38, 45, -4], [-25, 11, -38, -15, -45]]

[-588, 280440, 7053750]