Answer is 1/5 simplified.
8X9 is 72 and 360.
360/72 is 5.
1/5
8/18 * 9/20
divide 8/18 by 2 on the top and bottom
4/9
4/9 * 9/20
4/20 * 9/9
4/20
divide the top and bottom by 4
