Toothpaste Pony! (minti)'s status on Tuesday, 02-Apr-13 06:47:10 UTC
-
#uselessinfo You can easily get the remainder of any division by nine in your head, just calculate the numbers digital root and that's the answer. "The digital root (also repeated digital sum) of a number is the (single digit) value obtained by an iterative process of summing digits, on each iteration using the result from the previous iteration to compute a digit sum. The process continues until a single-digit number is reached. For example, the digital root of 65,536 is 7, because 6+5+5+3+6 = 25 and <math>2+5 = 7." If you get 9 as the root, the remainder is 0. So basically, the remainder of 65,536 / 9 is 7. Neat, huh?
