The us postal service delivered 7.14 x 1010 pieces of mail in the month of december and 3.21 x 1010 in the month of january. what is the total mail delivered for these two months?

I assume that the numbers are supposed to be written as 7.14 x 10^10 for December and 3.21 x 10^10. The total mail delivered is the sum of these two numbers.
                         (7.14 x 10^10) + (3.21 x 10^10) = 1.035 x 10^11

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