Answer:
The expression is (
× 215) + 1 = 646
Step-by-step explanation:
Thinking process:
The answer to this problem is

To check the quotient, simply multiply the denominator of the reminder by the whole number like this:
3 × 215 = 645
Then afterward, add the numerator like this (645 + 1) = 646
The general expression for
is given as

This checks the numerator, in this case, 646