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: [[38, 23], [4, 24, -20, 30, -4], [36, 49, -4], [-23, 21, -8]]

[874, 230400, -7056, 3864]