The single bed is 50 centimeters wide, and the kitten walked back and forth on it twice, how many meters did it walk in total?
单人床宽50厘米，小猫在上面走了两个来回，它一共走了多少米．
<gadget id="calculator">2 / 100</gadget>
<output>1/50 = around 0.02</output>

<gadget id="calculator">50 * 2 * (1/50)</gadget>
<output>2</output>

<result>2</result>