The distance between A and B is 580 kilometers, and there is a city C between the two cities. The express train travels from city A to city C, and the slow train travels from city B to city C. The express train has traveled 90 kilometers, and the slow train has traveled 60% of its distance. At this time, the remaining distances of the fast and slow trains are exactly equal. Find the distance between cities A and C.
A、B两城相距580千米，两城间有一个C城．快车从A城开往C城，慢车从B城开往C城，快车行驶了90千米，慢车行驶了它的路程的60%，这时，快、慢车剩下的路程恰好相等．求A、C两城间的距离．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">580 * (3/5)</gadget>
<output>348</output>

<gadget id="calculator">580 - 348</gadget>
<output>232</output>

<gadget id="calculator">90 + 232</gadget>
<output>322</output>

<gadget id="calculator">1 - (3/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">322 / (7/5)</gadget>
<output>230</output>

<result>230</result>