The elder brother and Xiao Ming are running a race. When the elder brother reaches the midpoint, Xiao Ming is still 800 meters away from the finish line. When the elder brother finishes the race, Xiao Ming has run 80% of the distance. How many meters are there in the race?
哥哥和小明进行赛跑，当哥哥跑到中点时，小明还距终点800米，当哥哥跑完全程时小明跑了全程的80%，赛跑的全程有多少米？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(4/5) * (1/2)</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">800 / (3/5)</gadget>
<output>4_000/3 = around 1_333.333333</output>

<result>4_000/3 = around 1_333.333333</result>