Xiao Ming wants to go to the 11th floor of a high-rise building, and it took him 100 seconds to get to the 5th floor. Calculated at this speed, how many seconds does he need to walk?
小明要到高层建筑的11层，他走到5层用了100秒．照此速度计算，他还需要走多少秒？
<gadget id="calculator">5 - 1</gadget>
<output>4</output>

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

<gadget id="calculator">10 - 5</gadget>
<output>5</output>

<gadget id="calculator">25 * 5</gadget>
<output>125</output>

<result>125</result>