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: [[-47, -29], [-48, -27, 16, 50], [37, -29, 19, 17], [-20, -40, -20, 13]]

[1363, 1036800, -346579, -208000]