Your number incremented by 1 is 8<BR>Your number, incremented again by 1, is now 9. If we store that operation, its value is also 9.<HR>Let's start over, with your original number 7<BR>Again, your number incremented by 1 is 8<BR>Now we store the value of your number in a second variable, which is now equal to 8, and then we increment your number again. It's now 9.
