Xiao Ming participated in breaststroke and swam 4 back and forth in total. The swimming pool is 60 meters long. How many meters did he swim in total?
小明参加蛙泳，共游了4个来回，游泳池长60米，请问他一共游了多少米？
<gadget id="calculator">4 * 2</gadget>
<output>8</output>

<gadget id="calculator">60 * 8</gadget>
<output>480</output>

<result>480</result>