It took Xiao Ming 6 seconds to walk from the first floor to the third floor. How many seconds did it take him to walk from the first floor to the fifth floor?
小明从一楼走到三楼用了6秒，照这样他从一楼走到五楼用多少秒．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">3 * 4</gadget>
<output>12</output>

<result>12</result>