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: [[45, -29, -10, 20], [50, 23, 10], [45, 46, 35, 28]]

[261000, 11500, 2028600]