Someone went to work on the 8th floor of a high-rise building. Unfortunately, there was a power outage and the elevator stopped. It took him 48 seconds to walk from the first floor to the fourth floor. How long will it take to walk to the 8th floor at the same speed?
某人到一座高层楼的8楼去办事，不巧停电，电梯停开．他从1楼走到4楼用了48秒．用同样的速度走到8楼，还要多长时间？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">48 / 3</gadget>
<output>16</output>

<gadget id="calculator">8 - 4</gadget>
<output>4</output>

<gadget id="calculator">16 * 4</gadget>
<output>64</output>

<result>64</result>