Chloe is working on this equation: $$475+17\times 58+990-19\times 32+33\times 111$$.  Her answer is $$5681$$.  Without calculating, do you think Chloe\textquotesingle s answer is correct or wrong? Explain why. 
Overseas Competition->Knowledge Point->Number Theory Modules->Odd and Even Numbers
Her calculation was wrong. The answer is supposed to be an even number.  $$117\times32$$，$$19\times12$$ are even numbers and $$133\times11$$ is an odd number.  So in that case, we can think of the equation as:  odd + even + even - even + odd = even  Hence, the answer should be an even number! However, Chloe\textquotesingle s answer is an odd number. 