20 x 80 = 1600
4x20,2x40,8x10,1x80
40x2=80
800
80 * 9 = 720
20
720/80 = 9
80 times .9
80 รท 9 = 8 remainder 8
no it goes into 81 9 times
80 goes into 249 three times, with a remainder of 9.
oinjg
80
9 goes into 80 8 times, with 8 left over.
Exactly 80 times
9 times with a remainder of 40 or 9.5 times