If 314,314 bottles of water need to be placed in boxes and each box can contain at most 9 bottles of water. How many bottles of water will be in the last unfilled box? Choose the correct option
A) 4 B) 5 C) 6 D) 7 E) 10
The number of bottles of water that can be placed in boxes of 9 bottles is the first number that is divisible by 9 that occurs before 314,314.   In order to divide the sum in 9 parts, the amount must be divisible by 9   Divisibility rule of 9: The sum of the digits must be divisible by 9   Sum of digits of 314,314 = 16 and 9 is divisible by 9.   Hence, we need to remove 7 to this number for it to be divisible by 9   Correct Option: 7
<result>D</result>
If 314,314 bottles of water need to be placed in boxes and each box can contain at most 9 bottles of water. How many bottles of water will be in the last unfilled box?