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: [[47, -48, 23], [29, 18], [-7, 12, 13]]

[-51888, 522, -1092]