First find the number: n = divisor × quotient + remainder.

Then divide n by 5 to find the new remainder.

Find the number n	=	(163 × 7) + 4 = 1,141 + 4 = 1,145
1,145 ÷ 5	=	229 exactly (remainder 0)
The remainder is 0. The number 1,145 is perfectly divisible by 5.