The road construction team repaired one road, 30% of the completed road was repaired on the first day, and 80 meters were repaired on the second day, and the remaining 440 meters were not repaired. How much is the road?
修路队修一公，第一天修全的30%第二一天少修了80米还剩440米没有修这公路的全多少？
<gadget id="calculator">440 + 80</gadget>
<output>520</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">(3/10) + (3/10)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">520 / (2/5)</gadget>
<output>1_300</output>

<result>1_300</result>