Xiao Ming ran 2 laps along the playground that is 60 meters long and 40 meters wide. How many meters did he run in total?
小明沿着长60米，宽40米的操场跑了2圈，一共跑了多少米．
<gadget id="calculator">60 + 40</gadget>
<output>100</output>

<gadget id="calculator">100 * 2 * 2</gadget>
<output>400</output>

<result>400</result>