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: [[4, 9, 46, 12], [-42, -41, 10, 31, 4], [2, -28], [-43, -32], [-37, -31, 22, -10]]

[19872, 2135280, -56, 1376, -252340]