It took Xiao Ming 6 minutes to run from the first floor to the third floor. If he took 12 minutes, how many floors could he run to?
小明用了6分钟的时间从第一层楼跑到第三层楼，如果他用12分钟时间，可以跑到第多少层楼．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

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

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

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

<result>5</result>