Mr. R.’s World of Math

“Like the school is totally vaporizing!,” cried Hannah, “We have to jump!”
“I don’t think that’s a very good idea,” said David, “When we hit the ground, we would be as flat as the pancakes I ate this morning!”
“What choice do we have?” asked Justin, “I think we can make it!”
“Make it?” yelled Serena…”I doubt that…”

But there is a choice says Mr. R:
If the following three numbers add up to more than one million it is time to jump. If they total less than one million you can find another way to escape the classroom. The 3 numbers are…

467,843

and

532,057

and

99

What is the sum of the three numbers?

(I wonder if the sum more than one million..)