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: [[-37, -28, 39, 31], [31, 21], [-21, -26, -36], [-27, 29, 9], [8, 29, 48, 20]]

[1252524, 651, -19656, -7047, 222720]