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.
[[-42, -36], [13, -8, 27], [-39, -23, 8], [10, 18], [49, -12, 36, 35, 39], [-47, -19]]