16 * 640 = 10,240
40 multiplied by 16 equals 640.
Well honey, if you do the math, 16 goes into 640 a grand total of 40 times. It's simple division, not rocket science. So, there you have it, 16 fits into 640 exactly 40 times.
640*4 = 2560
640 x 60 = 38400
80 multiplied by 640 is 51,200
101534080
640
22,400
40
5 multiplied by 128 equals 640.
80 multiplied by 8 equals 640.
You can do this problem by multiplying by the reciprocal aka 16/1so 640 *16 =640 * 16 = 10 240