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: [[19, -31, -36, 47], [-4, -1], [21, 27, 33, 1]]

[996588, 4, 18711]