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: [[18, 16, 21], [11, -36], [0, -39, -14, 28], [11, 49, 29, -20], [7, -26, 6]]

[6048, -396, 0, -312620, -1092]