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, -24], [2, -4], [-42, 50, -20], [-12, -15], [49, -40, -29]]

[-312, -8, 42000, 180, 56840]