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.
[[6, -19, -41, -37], [-48, -5, -49], [-35, -36], [-10, -47, 50, -39, -29]]