Standard form is combining all of the numbers together so it's simpler. Here are the steps:
If we add 4,000,000 and 300,000, that gets us 4,300,000.
If we add 6,000 to 4,300,000, that gets us 4,306,000.
Now we can add 500+7 and that gets us 507. All we need to do now is add 4,306,000+507. That gives us our answer! :)
