It takes 1 minute for Xiaohong to walk from the first floor to the third floor. At this speed, how many minutes will it take her to go from the first floor to the fifth floor?
小红从一楼走到三楼要1分钟，照这样的速度，她从一楼到五楼要多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

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

<gadget id="calculator">(1/2) * 4</gadget>
<output>2</output>

<result>2</result>