0.08181818182
220
220 divided by 12 equals 18 with a remainder of 4.
12.2222
18.3333
-- Every multiple of 12 has a remainder of 3 when divided by 9.-- The largest multiple of 12 that's less than 220 is (12 x 18) = 216.-- So there are 18 of them.
22
0.2727
220-18 = 202
22
200
2.5909
27.5