It took Lele 3 minutes to climb from the 1st floor to the 3rd floor, so how many minutes will it take to climb from the 1st floor to the 5th floor?
乐乐从1楼爬到3楼共用了3分钟，那么从1楼爬到5楼要用多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

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

<gadget id="calculator">(3/2) * 4</gadget>
<output>6</output>

<result>6</result>