A road is 15 meters long, and it is completed in 7 days. How much of this road is repaired on average every day?
一条公路长15米，7天修完，平均每天修了这条公路的多少
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<result>1/7 = around 0.142857</result>