设手机号码前5位为x,后6位为y,则 0IEFCDeCO
1. x 0IEFCDeCO
2. 400x 0IEFCDeCO
3. 400x+1 0IEFCDeCO
4. (400x+1)*5000 0IEFCDeCO
5. (400x+1)*5000+y 0IEFCDeCO
6. (400x+1)*5000+2y 0IEFCDeCO
7. (400x+1)*5000+2y-5000 0IEFCDeCO
8. ((400x+1)*5000+2y-5000)/2=1000000x+y=你的手机号码了。