A rectangular lawn is 20 meters long and 16 meters wide. Leave 35 square meters in the middle as a fountain, and the rest are planted with turf. How many square meters is the area of the turf?
一块长方形草坪长20米，宽16米．中间留下35平方米的地方做喷水池，其余的种草皮．种草皮的面积是多少平方米？
<gadget id="calculator">20 * 16</gadget>
<output>320</output>

<gadget id="calculator">320 - 35</gadget>
<output>285</output>

<result>285</result>