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: [[-9, 4, -41], [26, 14, 22, 49], [-43, 9, -23], [2, -48, -37]]

[1476, 392392, 8901, 3552]