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: [[26, 17, -31, -11, 11], [47, 31, -29], [-12, -39], [-33, 4, 48, -38, -49]]

[1657942, -42253, 468, -11797632]