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: [[1, 38, -25], [-35, -13, -28], [-30, -4, -29], [1, 1, 27, -15]]

[-950, -12740, -3480, -405]