It took Xiaogang 6 minutes to go from the first floor to the fourth floor. Please calculate how many minutes it took Xiaogang to go up to the second floor.
小刚从一楼上到四楼用了6分钟，请你算一算小刚上到二楼用了多少分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<gadget id="calculator">2 - 1</gadget>
<output>1</output>

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

<result>2</result>