It takes Tao Jie 30 seconds to go from the third floor to the fifth floor. According to this calculation, how many floors can he run from the first floor in 1 minute.
陶杰从三楼到五楼需要30秒，照这样计算，他用1分钟从一楼能跑到多少楼．
<gadget id="calculator">5 - 3</gadget>
<output>2</output>

<gadget id="calculator">30 / 2</gadget>
<output>15</output>

<gadget id="calculator">60 / 15</gadget>
<output>4</output>

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

<result>5</result>