Mr. Li went to work on the 8th floor of a building, just in time for a power outage in the elevator, so he could only climb the stairs on foot. It took him 48 seconds to climb from the first floor to the fourth floor. How many seconds does it take to climb from the first floor to the eighth floor at the same speed?
李先生去一幢楼的第8层办事，恰赶上电梯停电，他只能步行爬楼．他从第1层爬到第4层用了48秒，请问以同样的速度从第1层爬到第8层共需要多少秒．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

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

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">16 * 7</gadget>
<output>112</output>

<result>112</result>