A road, Xiao Ming walked the full length (1/3), and there is still 300 meters away from the midpoint, how many meters is the total length of this road?
一条公路，小明走了全长的(1/3)，离中点还有300米，这条公路全长多少米？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">(1/2) - (1/3)</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">300 / (1/6)</gadget>
<output>1_800</output>

<result>1_800</result>