Question

What is the sum of number 13

Answer 1

Exact answer- 509 x 13 = 6,617
Or
Estimate- 600 x 13 = 7,800
Hope I help :)!

Answer 2

Pretty simple, really - all you have to do us divide 509 by 14 before you're left with an answer of 36.35. Now, the number '36' is closer to 0 than 100, so we'll round down instead of up, therefore the number of floors to the building is 36!