Use the method of casting out nines to determine the remaind

Use the method of \"casting out nines\" to determine the remainder when 8, 212, 575, 218 is divided by nine.

Solution

firstly add all the digits

8+2+1+2+5+7+5+2+1+8

= 41

divide 41 by 9

41 = 4(9) +5

that implies

remainder is 5

So when 8,212,575,218 is divided by 9 , remainder will be 5