An engineering team wants to repair a 6.9-kilometer-long road, and it will repair 1.2 kilometers every day for the first 3 days. After finishing the remaining 3 days, how many kilometers will be repaired on average in these three days?
一支工程队要修一条长6.9千米的公路，前3天每天修1.2千米．余下的3天修完，这三天平均每天修多少千米？
<gadget id="calculator">1.2 * 3</gadget>
<output>3.6</output>

<gadget id="calculator">6.9 - 3.6</gadget>
<output>3.3</output>

<gadget id="calculator">3.3 / 3</gadget>
<output>1.1</output>

<result>1.1</result>