Oh, dude, that's like basic math. 4 times 100 equals 400. It's like, multiplication, man. Easy peasy lemon squeezy.
Multiplication of fractions. 1/4 X 1600/1 ( Note the trivial '1') Cancel down by '4' Hence 1/1 X 400/1 = 400/1 = 400 The answer!!!!!!
80
500 equals 500 - whether with multiplication or division or whatever.
1 x 95, 5 x 19.
A product.
1 x 400, 2 x 200, 4 x 100, 5 x 80, 8 x 50, 10 x 40, 16 x 25.
70*400 = 28000
1x31
,ngf
456
172.8x10