To simplify the expression \( 63 \div 6^{-2} \), we can first rewrite the division in terms of multiplication by the reciprocal:
\[ 63 \div 6^{-2} = 63 \times 6^{2} \]
Next, we calculate \( 6^{2} \):
\[ 6^{2} = 36 \]
Now, we substitute this back into the expression:
\[ 63 \times 36 \]
Now, we can calculate \( 63 \times 36 \):
\[ 63 \times 36 = 2268 \]
Therefore, the simplified expression is:
\[ \boxed{2268} \]