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, 10, 15, -39], [34, -45, -21, -29, 32], [29, 33], [-22, 31], [45, -50]]

[-269100, -29816640, 957, -682, -2250]