It takes 24 minutes for Xiao Lin to climb from the first floor to the fourth floor. According to this calculation, how many minutes will it take to climb from the second floor to the ninth floor.
小林从一楼爬到四楼需要24分钟．照这样计算，从二楼爬到九楼要多少分钟．
<gadget id="calculator">4 - 1</gadget>
<output>3</output>

<gadget id="calculator">24 / 3</gadget>
<output>8</output>

<gadget id="calculator">9 - 2</gadget>
<output>7</output>

<gadget id="calculator">8 * 7</gadget>
<output>56</output>

<result>56</result>