It took Teacher Liu 8 seconds to walk the stairs from the first floor to the second floor. How many seconds does it take to walk to the seventh floor at this speed.
刘老师走楼梯从一楼到二楼用了8秒．照这样的速度走到七楼，共用多少秒．
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

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

<gadget id="calculator">7 - 1</gadget>
<output>6</output>

<gadget id="calculator">8 * 6</gadget>
<output>48</output>

<result>48</result>