A swimming pool is 28 meters long and 15 meters wide. Li Dayong swam around the swimming pool once. How many meters did he swim in total?
一个游泳池长28米，宽15米，李大勇绕游泳池游了1圈，他一共游了多少米．
<gadget id="calculator">28 + 15</gadget>
<output>43</output>

<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<result>86</result>