It took Xiaohong 15 seconds to walk from the first floor to the second floor. At this speed, how long would it take Xiaohong to walk from the first floor to the sixth floor?
小红从一楼走到二楼用了15秒时间，照这样的速度，小红从一楼走到六楼一共要用多长时间？
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">15 / 1</gadget>
<output>15</output>

<gadget id="calculator">6 - 1</gadget>
<output>5</output>

<gadget id="calculator">15 * 5</gadget>
<output>75</output>

<result>75</result>