A railway, after repairing 800 kilometers, the remaining part is 150 more than the total length (2/5), how long is this railway?
一条铁路，修完800千米后，剩余的部分比全长的(2/5)多150，这条铁路长多少？
<gadget id="calculator">800 + 150</gadget>
<output>950</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 - (2/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">950 / (3/5)</gadget>
<output>4_750/3 = around 1_583.333333</output>

<result>4_750/3 = around 1_583.333333</result>