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: [[19, -19, 1, -47], [39, -3, 26, 32, 1], [-12, 11, 2, 42, -49]]

[16967, -97344, 543312]