1111111111111111111111111111111111111111111111111411111111111111111111111111111111111111111111111117111111111111111111111111111111111111111111111111111111111111111111111111111111111999999999999990999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999
Tìm số 4,7,0