Station A and Station B are 610 kilometers apart, and there is Station C between the two stations. The express train has traveled 90 kilometers from station A to station C, and the slow train has traveled (3/8) of its entire distance from station B to station C. At this time, Station C is just at the midpoint between the fast and slow trains. Find the distance from Station A to Station C.
甲、乙两站相距610千米，两站之间有丙站．快车从甲站开往丙站，已经行驶了90千米，慢车从乙站开往丙站，已经行驶了它全部路程的(3/8)．这时丙站正好处在快慢两车之间中点的位置上，求甲站到丙站的距离．
<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">610 * (3/8)</gadget>
<output>915/4 = around 228.75</output>

<gadget id="calculator">610 - (915/4)</gadget>
<output>1_525/4 = around 381.25</output>

<gadget id="calculator">90 + (1_525/4)</gadget>
<output>1_885/4 = around 471.25</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">1 + (5/8)</gadget>
<output>13/8 = around 1.625</output>

<gadget id="calculator">(1_885/4) / (13/8)</gadget>
<output>290</output>

<result>290</result>