A swimming lane is 150 meters long. Xiaoqiang practiced swimming in it 4 times. How many meters did he swim?
一条泳道长150米，小强锻炼在里面游4个来回，他游了多少米？
<gadget id="calculator">150 * 2 * 4</gadget>
<output>1_200</output>

<result>1_200</result>