A football field is a rectangle with a length of 100 meters and a width of 75 meters. Wang Gang ran a lap along the football field, how many meters did he run?
足球场是一个长方形，长100米，宽75米．王刚沿着足球场跑了1圈，跑了多少米？
<gadget id="calculator">100 + 75</gadget>
<output>175</output>

<gadget id="calculator">175 * 2</gadget>
<output>350</output>

<result>350</result>