Xiaowei and his father planted trees and planted 24 trees at 3 o'clock in the morning. At this rate, how long will it take to plant 56 trees?
小伟和爸爸植树，上午用了3时植树24棵．照这样的速度，植树56棵，一共要用几时？
<gadget id="calculator">24 / 3</gadget>
<output>8</output>

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

<result>7</result>