One square yard equals $9 \mathrm{ft}^{2}$. Use this information to convert $117 \mathrm{ft}^{2}$ to square yards. \[ 117 \mathrm{ft}^{2}=\square \mathrm{yd}^{2} \] (Simplify your answer. Type an integer or a decimal.)

Step 1 ：Given that one square yard equals 9 square feet, we can convert 117 square feet to square yards by dividing 117 by 9.

Step 2 ：\[\frac{117}{9} = 13.0\]

Step 3 ：So, 117 square feet is equal to 13 square yards.

Step 4 ：Final Answer: \[117 \mathrm{ft}^{2} = \boxed{13} \mathrm{yd}^{2}\]