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: [[7, 38], [-25, 29, -23, -28], [37, 13, -40, -30, -50]]

[266, -466900, -28860000]