A rectangular lawn is 39 meters long and 15 meters wide. Leave 120 square meters in the middle as a fountain, and plant turf in the rest. How many square meters is the area of the turf?
一块长方形草坪长39米，宽15米．中间留下120平方米的地方做喷水池，其余的地方种草皮．种草皮的面积是多少平方米？
<gadget id="calculator">39 * 15</gadget>
<output>585</output>

<gadget id="calculator">585 - 120</gadget>
<output>465</output>

<result>465</result>