It took Xiaoyun 9 seconds to go from the first floor to the second floor. At this speed, how many seconds would it take him to walk from the first floor to the sixth floor?
小云从一楼到二楼用了9秒，照这样的速度，他从一楼走到六楼要用多少秒．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">9 / 1</gadget>
<output>9</output>

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

<gadget id="calculator">9 * 5</gadget>
<output>45</output>

<result>45</result>