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, -47, -11, -24, -50], [-4, -11, 36, -21], [21, -23, -30, -7], [-46, 13, -22, 26]]

[13028400, -33264, -101430, 342056]