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: [[46, -42, 14], [-23, 8, 35, 29, 17], [-23, 21, -9, -19], [-40, 21]]

[-27048, -3174920, -82593, -840]