Because "Sai" stands for 9,9× 9 = 8 1 and "Good" stands for1.

1 1 1 1 1 1 1 1 1÷9= 12345679;

It can be concluded that Zhao, Qing, Shi, Shu, Xue, Tong, Xun, Sai and Hao respectively represent 1, 2, 3, 4, 5, 6, 7 and 9;

1+2+3+4+5+6+7+9=37,

So the answer is: 37.