The swimming pool is 25 meters long. Liangliang swam 3 back and forth. He swam a total of ﹙﹙ meters.
游泳池长25米，亮亮游了3个来回，他一共游了﹙﹚米．
<gadget id="calculator">25 * 2 * 3</gadget>
<output>150</output>

<result>150</result>