A rectangular playground is 60 meters long, and its width is 10 meters less than its length. Xiao Ming runs a lap every day. How many meters does he run?
一个长方形操场，长是60米，宽比长少10米，小明每天跑一圈，他跑了多少米？
<gadget id="calculator">60 - 10</gadget>
<output>50</output>

<gadget id="calculator">50 + 60</gadget>
<output>110</output>

<gadget id="calculator">110 * 2</gadget>
<output>220</output>

<result>220</result>