The road construction team builds a 10-kilometer road. The full length (3/10) was repaired on the first day, and 1 meter was repaired on the second day. How many kilometers are left to be repaired?
筑路队修一条10千米的公路．第一天修了全长的(3/10)，第二天修了1米，还有多少千米没有修？
<gadget id="calculator">3 / 10</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">10 * (3/10)</gadget>
<output>3</output>

<gadget id="calculator">10 - 3 - 1</gadget>
<output>6</output>

<result>6</result>