A train from Weihai to Jinan has traveled the entire distance (7/10), and there are 360 kilometers left. How many kilometers is the railway between Weihai and Jinan?
一列火车从威海开往济南，已经行驶了全程的(7/10)，还剩360千米．威海与济南之间的铁路长多少千米？
<gadget id="calculator">7 / 10</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">1 - (7/10)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">360 / (3/10)</gadget>
<output>1_200</output>

<result>1_200</result>