A highway is 10 meters long. The road construction team repaired the full length (1/5) in the first week. After the repair in the second week, half of the full length remained unrepaired. What fraction of the full length was repaired in the second week?
一条公路全长10米，修路队第一周修了全长的(1/5)，第二周修了后，还剩全长的一半没有修．第二周修了全长的几分之几？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/2) - (1/5)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>