A road repair team has been repairing a 720-meter-long road for 25 days, with an average of 24 meters per day. If the rest is 30 meters per day, how many days will it take?
一个修路队修一条长720米的公路，已经修了25天，平均每天修24米，剩下的如果每天修30米，还需要用多少天？
<gadget id="calculator">25 * 24</gadget>
<output>600</output>

<gadget id="calculator">720 - 600</gadget>
<output>120</output>

<gadget id="calculator">120 / 30</gadget>
<output>4</output>

<result>4</result>