Umm… I’m a boy, you do know that, right?
We all make mistakes sometimes, but we learn from them to avoid making the mistake again in the future.
An easy way to remember is this:
1,000,000,000 ÷ 2 = 500,000,000
Since 999,999,998 is 2 less than 1 billion, it is the same as 500 million take away 1