To simplify the expression \( 675 \div 2453 \), you can divide the two numbers.
Calculating it gives:
\[ 675 \div 2453 \approx 0.274 \]
So the simplified result of \( 675 \div 2453 \) is approximately \( 0.274 \).
If you were looking for a different type of simplification or had a different operation in mind, please provide more details!