A football field is 100 meters long and 45 meters wide. Xiaoqiang ran two laps along the field. How many meters did he run?
一个足球场长100米，宽45米，小强沿着场地跑了两圈，他跑了多少米？
<gadget id="calculator">100 + 45</gadget>
<output>145</output>

<gadget id="calculator">145 * 2 * 2</gadget>
<output>580</output>

<result>580</result>