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, 42, -42, 27], [-28, 20, 35, 28], [36, 9], [-29, 1, -2, 15], [-48, -44, -35, -28], [3, -4, -38, -46], [12, -42, -38, 14]]

[-1000188, -548800, 324, 870, 2069760, -20976, 268128]