new expressway has been built, 240 kilometers have been built, and the rest is 8 kilometers more than twice the completed one. How many kilometers is the total length of this newly built expressway?
新建一条高速公路，已建成240千米，剩下的比已建成的2倍还多8千米，这条新建的高速公路全长多少千米？
<gadget id="calculator">240 * 2</gadget>
<output>480</output>

<gadget id="calculator">240 + 480 + 8</gadget>
<output>728</output>

<result>728</result>