It takes 18 seconds for Wang Min to walk from the first floor to the third floor. How many seconds does it take him to walk from the first floor to the fifth floor?
王敏从一楼走到三楼需要18秒，他从一楼走到五楼需要多少秒？
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">18 / 2</gadget>
<output>9</output>

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

<gadget id="calculator">9 * 4</gadget>
<output>36</output>

<result>36</result>