An engineering team built a total of 1.9 kilometers of dikes in the first three days, and built 0.75 kilometers a day in the next four days, completing the task. On average, how many kilometers of dams does this engineering team build every day?
一个工程队，前三天共修筑堤坝1.9千米，后四天每天修筑0.75千米，完成了任务．这个工程队平均每天修筑堤坝多少千米？
<gadget id="calculator">0.75 * 4</gadget>
<output>3</output>

<gadget id="calculator">1.9 + 3</gadget>
<output>4.9</output>

<gadget id="calculator">3 + 4</gadget>
<output>7</output>

<gadget id="calculator">4.9 / 7</gadget>
<output>0.7</output>

<result>0.7</result>