A train from Ganzhou to Beijing has traveled the entire distance (11/20), and it is 837 kilometers away from Beijing. How long is the railway from Ganzhou to Beijing?
一列火车从赣州开往北京，已经行驶了全程的(11/20)，离北京还有837千米．赣州到北京的铁路长多少米？
<gadget id="calculator">11 / 20</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">1 - (11/20)</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">837 / (9/20)</gadget>
<output>1_860</output>

<gadget id="calculator">1_860 * 1_000</gadget>
<output>1_860_000</output>

<result>1_860_000</result>