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, -48], [-46, -28], [46, -20, -3, -10], [49, 34], [-14, -31], [7, 44, -7, 15]]

[-624, 1288, -27600, 1666, 434, -32340]