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: [[28, 49], [20, -15, -28, -1, -43], [-45, -21], [-33, 25], [-37, 46, -1, -18], [-26, -11, 5, 18], [45, 39], [20, 21, 49], [18, 10], [-20, -50, 21]]

[1372, 361200, 945, -825, -30636, 25740, 1755, 20580, 180, 21000]