A road is 300 meters long, 80 meters are repaired on the first day, and 120 meters are left after the second day, what fraction of the repaired on the first day is the second day?
一条路长300米，第一天修了80米，第二天修了后还剩120米，第一天修的是第二天修的几分之几？
<gadget id="calculator">300 - 80 - 120</gadget>
<output>100</output>

<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<result>4/5 = around 0.8</result>