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: [[-48, -32], [-40, 42], [-28, 40], [49, -28]]

[1536, -1680, -1120, -1372]