The engineering team dug a tunnel with a total length of 3,054 meters. In the first month, 184 meters were dug, and in the second month, the excavation was twice that of the first month. The rest was completed in 9 months. How many meters do you need to dig in a month?
工程队挖一条全长3054米的隧道，第一个月挖了184米，第二个月挖的是第一个月的2倍，剩下的分9个月完成，剩下的平均每个月要挖多少米？
<gadget id="calculator">184 * 2</gadget>
<output>368</output>

<gadget id="calculator">3_054 - 184 - 368</gadget>
<output>2_502</output>

<gadget id="calculator">2_502 / 9</gadget>
<output>278</output>

<result>278</result>