Someone wants to go to the 10th floor of a high-rise building. It takes him 100 seconds to walk from the 1st floor to the 5th floor. If he walks to the 10th floor at the same speed, how many seconds will it take?
某人要到高层建筑的10层去，他从1层走到5层用了100秒，如果用同样的速度走到10层，则还需要多少秒．
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">100 / 4</gadget>
<output>25</output>

<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">25 * 9</gadget>
<output>225</output>

<gadget id="calculator">225 - 100</gadget>
<output>125</output>

<result>125</result>