The distance from Changsha to Beijing is 1560 kilometers. A slow train travels from Changsha to Beijing at a speed of 110 kilometers per hour, while an express train travels from Beijing to Changsha at a speed of 150 kilometers per hour. How many kilometers did the fast train travel when the two cars met?
长沙到北京的路程是1560千米．一辆慢车以每小时110千米的速度从长沙开往北京，同时一辆快车以每小时150千米的速度从北京开往长沙，两车相遇时快车行了多少千米？
<gadget id="calculator">110 + 150</gadget>
<output>260</output>

<gadget id="calculator">1_560 / 260</gadget>
<output>6</output>

<gadget id="calculator">6 * 150</gadget>
<output>900</output>

<result>900</result>