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: [[-40, -47, -8, -29], [18, 50], [2, 11, -2, -36, 15]]

[436160, 900, 23760]