The road construction team built 200 meters of road on the first day, 150 meters in the morning of the second day, and 80 meters in the afternoon. How many meters more were repaired on the second day than on the first day?
修路队第一天修路200米，第二天上午修了150米，下午修了80米，第二天比第一天多修了多少米？
<gadget id="calculator">80 - 200</gadget>
<output>-120</output>

<gadget id="calculator">150 + (-120)</gadget>
<output>30</output>

<result>30</result>