The swimming pool track is 26 meters long. Xiaodong swam 3 back and forth. How many meters has he swam?
游泳池赛道长26米，小东游了3个来回，他已经游了多少米？
<gadget id="calculator">2 * 3</gadget>
<output>6</output>

<gadget id="calculator">6 * 26</gadget>
<output>156</output>

<result>156</result>