The ratio of the paved to the unpaved high-speed railway is 1:3, and 329.5 kilometers will be paved to cover 50% of the distance. How many meters is the total length of the Shanghai high-speed railway?
篙沪高铁己铺垫与未铺垫的比是1：3，再铺329.5千米正好铺完全程的50%，篙沪高铁全长多少米？
<gadget id="calculator">50 / 100</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 + 3</gadget>
<output>4</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/2) - (1/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">329.5 / (1/4)</gadget>
<output>1_318</output>

<result>1_318</result>