Xiao Gang went to the swimming pool to swim. The swimming pool is 25 meters long. He has swum 3 back and forth. How many meters has he swum in total?
小刚到游泳馆游泳．游泳池长25米，他已经游了3个来回，他一共游了多少米？
<gadget id="calculator">25 * 2 * 3</gadget>
<output>150</output>

<result>150</result>