如何将一个列表的所有元素与java中第二个列表的第一个元素相乘？

I have two lists; list1 and list2. list1 consists of 5 elements and list2 consists 18 elements and each element of list2 in turn consist of a (41X41) 2D array. How can I multiply the first element of list1 with all the 18 element of list2? I have to do this multiplication for all the five elements of list1.I have two lists; list1 and list2. list1 consis