A football field is 105 meters long and 45 meters wide. Xiaoqiang runs 4 laps around the football field. How many meters will he run in total?
一个足球场，长是105米，宽是45米，小强绕这个足球场跑了4圈，一共要跑多少米？
<gadget id="calculator">105 + 45</gadget>
<output>150</output>

<gadget id="calculator">150 * 2 * 4</gadget>
<output>1_200</output>

<result>1_200</result>