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: [[-48, -24, -49, -15, -22], [-2, -10, 16, 50, -49], [18, -37, -26, 39, -28]]

[-18627840, -784000, -18909072]