Obviously it takes 26 seconds to walk from the third floor to the fifth floor. According to this calculation, how many seconds does it take him to walk from the second floor to the eighth floor.
明明从三楼走到五楼需要26秒，照这样计算，他从二楼走到八楼需要多少秒．
<gadget id="calculator">26 / 2</gadget>
<output>13</output>

<gadget id="calculator">8 - 2</gadget>
<output>6</output>

<gadget id="calculator">13 * 6</gadget>
<output>78</output>

<result>78</result>