The waterway from Wuhan to Chongqing is 1275 kilometers long. A ship sailed from Wuhan to Chongqing, and it has sailed the entire distance (3/5). How many kilometers away from Chongqing?
武汉到重庆的水路长1275千米．一艘轮船从武汉开往重庆，已经航行了全程的(3/5)．离重庆还有多少千米？
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">1_275 * (2/5)</gadget>
<output>510</output>

<result>510</result>