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: [[-20, -20], [11, -32, 10, 27], [16, 14, -35], [-18, 27, -19, -15]]

[400, -95040, -7840, -138510]