A swimming pool is 25 meters long. Xiao Liang swam 3 times back and forth. How many meters did he swim in total?
一个游泳池长25米，小亮游了3个来回，他共游了多少米．
<gadget id="calculator">3 * 2 * 25</gadget>
<output>150</output>

<result>150</result>