The swim lane of the swimming pool is 25 meters long. Xiaohong swam 3 times back and forth. How many meters did she swim?
游泳池的游道长25米．小红游了3个来回．她游了多少米？
<gadget id="calculator">25 * 3 * 2</gadget>
<output>150</output>

<result>150</result>