To build a highway, 160 meters per day in the first 15 days, and 85 meters in the next 10 days, how many meters per day on average?
修一条高速公路，前15天每天修160米，后10天共修85米，平均每天修多少米？
<gadget id="calculator">160 * 15</gadget>
<output>2_400</output>

<gadget id="calculator">2_400 + 85</gadget>
<output>2_485</output>

<gadget id="calculator">15 + 10</gadget>
<output>25</output>

<gadget id="calculator">2_485 / 25</gadget>
<output>497/5 = around 99.4</output>

<result>497/5 = around 99.4</result>