This suggests that if we have some number of thousands whose digits total 9, that we will have the number of interest. Of course, we can add 200 to some number of thousands with a digit total of 7. The smallest such digit total will be had with the number 1222 using the specified digits {0, 1, 2}. This gives rise to the result above: 1222×1000 +200 = 1,222,200. It also explains why moving the 1 to the right will also give a multiple of 225.
since both of these have a common multiply of 6 (3 x 2 = 6 and 6 already being there for the larger one) you would multiply both the 1 and the 3 by 2 so it's easier to solve, and you get 2/6.
