For a 6-kilometer-long highway, the road construction team can repair (4/5) kilometers per day. After 4 days of repairing, how many kilometers are left to be repaired?
一条长6千米的公路，修路队每天能修(4/5)千米，修了4天后还剩下多少千米没有修完？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/5) * 4</gadget>
<output>16/5 = around 3.2</output>

<gadget id="calculator">6 - (16/5)</gadget>
<output>14/5 = around 2.8</output>

<result>14/5 = around 2.8</result>