It takes Xiaohong 1.2 minutes to go from the first floor to the third floor. How many minutes does it take to go from the first floor to the seventh floor at the same speed?
小红从一楼到三楼要用1.2分钟，用同样的速度从一楼到七楼用多少分钟．
<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">1.2 / 2</gadget>
<output>0.6</output>

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">0.6 * 6</gadget>
<output>3.6</output>

<result>3.6</result>