'What is 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9 plus 9?

The answer is 252, Exept, you added a "p" at the end. Is this just a misspelling, or does it mean something?

= 90 (9*10)

263

9 + 9 + 9 + 9 = 36

The answer is 81. Simply add up all of the numbers arithmetically like you would for two plus two. To make sure the answer is correct, check your work using a calculator.