The road repair team wanted a 2.8-kilometer road. They built 0.8 kilometers in January, 0.3 kilometers more than in February. The rest will be completed in March. How many kilometers will be repaired in March?
修路队要一条2.8千米的公路，一月份修了0.8千米，比二月份多修0.3千米，剩下的三月份完成，三月份还要修多少千米？
<gadget id="calculator">0.8 - 0.3</gadget>
<output>0.5</output>

<gadget id="calculator">2.8 - 0.8 - 0.5</gadget>
<output>1.5</output>

<result>1.5</result>