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, -26], [-10, -15, 29, 13, -34], [-42, 19, 42, -18, -7]]

[988, -1922700, -4223016]