To install a water pipe, 222 meters were installed in the first 6 days. According to this speed, it can be installed in another 12 days. How many meters is this pipe long? (Answer with proportional knowledge)
安装一条水管，前6天安装了222米，照这样的速度，再用12天就可以装完．这条水管长多少米？(用比例知识解答)
<gadget id="calculator">222 / 6</gadget>
<output>37</output>

<gadget id="calculator">37 * 6</gadget>
<output>222</output>

<gadget id="calculator">37 * 12</gadget>
<output>444</output>

<gadget id="calculator">222 + 444</gadget>
<output>666</output>

<result>666</result>