The school playground was originally 180 meters long, which was three times the width. After the expansion, the length was shortened by 10 meters, and the width was twice the original. How much did the area increase after the expansion?
学校操场原来长180米，是宽的3倍，扩建后长缩短了10米，宽是原来的2倍，扩建后面积增加了多少？
<gadget id="calculator">180 - 10</gadget>
<output>170</output>

<gadget id="calculator">180 / 3</gadget>
<output>60</output>

<gadget id="calculator">60 * 2</gadget>
<output>120</output>

<gadget id="calculator">170 * 120</gadget>
<output>20_400</output>

<gadget id="calculator">180 * 60</gadget>
<output>10_800</output>

<gadget id="calculator">20_400 - 10_800</gadget>
<output>9_600</output>

<result>9_600</result>