The school playground is 30 meters wide, and its length is 15 meters more than twice its width. What is its area in square meters?
学校操场宽30米，长比宽的2倍还多15米，它的面积是多少平方米？
<gadget id="calculator">30 * 2</gadget>
<output>60</output>

<gadget id="calculator">60 + 15</gadget>
<output>75</output>

<gadget id="calculator">75 * 30</gadget>
<output>2_250</output>

<result>2_250</result>