A road construction team is divided into two groups, and they will drive a 1314-meter-long tunnel from both sides of the mountain. The first group will drive 8.8 meters per day, and the second group will drive 8.6 meters per day. The first group will work for 3 days first, and the rest will How many days will it take before and after opening the tunnel?
一支筑路队分为两个小组，从山的两边开-条长1314米的隧道，第一组每天开8.8米，第二组每天开8.6米，第一组先工作3天，剩下的由两组一同开，开通这条隧道前后一共要多少天？
<gadget id="calculator">8.8 * 3</gadget>
<output>26.4</output>

<gadget id="calculator">1_314 - 26.4</gadget>
<output>1_287.6</output>

<gadget id="calculator">8.8 + 8.6</gadget>
<output>17.4</output>

<gadget id="calculator">1_287.6 / 17.4</gadget>
<output>74</output>

<gadget id="calculator">74 + 3</gadget>
<output>77</output>

<result>77</result>