1/9 = .1111111111...2/9 = .2222222222... (2 * 1/9)7/9 = .7777777777... (7 * 1/9)8/9 = .8888888888... so 9/9 = .999999999... = 1
2/9 = .2222222222... (2 * 1/9)
7/9 = .7777777777... (7 * 1/9)
8/9 = .8888888888...
so 9/9 = .999999999... = 1