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: [[13, 19], [5, -2, -19], [-19, 12, -4, 41, -46], [46, 43]]

[247, 190, -1720032, 1978]