Someone went to work on the eighth floor of a ten-story building. Unfortunately, the power went out and the elevator stopped. If it takes 72 seconds to go from the first floor to the fourth floor, how many seconds will it take to go from the fourth floor to the eighth floor at the same speed?
某人到十层大楼的第八层办事，不巧停电，电梯停开．如果从第一层走到第四层要72秒，请问：以同样的速度从第四层走到第八层，还需要多少秒才能到达？
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">72 / 3</gadget>
<output>24</output>

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

<gadget id="calculator">24 * 4</gadget>
<output>96</output>

<result>96</result>