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: [[41, 8, 10], [37, -32], [45, -37], [-31, -23, 21, -38]]

[3280, -1184, -1665, -568974]