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: [[31, -18, -34, 50], [43, 12, 24, -9], [-29, -8, -23], [-25, -31], [-45, -42, 7, 3, -33], [39, -48, -19, -13], [-5, -8]]

[948600, -111456, -5336, 775, -1309770, -462384, 40]