To estimate \( 7.523 \div 4.23 \), we can round the numbers:
- Round \( 7.523 \) to \( 8 \).
- Round \( 4.23 \) to \( 4 \).
Now, divide the rounded numbers:
\[ 8 \div 4 = 2 \]
So, the estimated result of \( 7.523 \div 4.23 \) is approximately \( 2 \).