and B are training on the oval track, starting from the same place and running in the opposite direction at the same time, each of them runs back to the starting point after running the first lap and immediately turns around and accelerates. When running the first lap, the speed of B is the speed of A ( 2/3), when A ran the second lap, his speed was increased by (1/3) compared to the first lap, and when B ran the second lap, his speed was increased by (1/5) compared to the first lap. The second meeting is 285 meters away from the first meeting point. What is the total length of this oval runway?
甲、乙在椭圆形跑道上训练，同时从同一地点出发反向而跑，每人跑完第一圈回到出发点立即回头加速跑，跑第一圈时，乙的速度是甲的速度的(2/3)，甲跑第二圈时速度比第一圈提高了(1/3)，乙跑第二圈时速度比第一圈提高了(1/5)，已知甲、乙二人第二次相遇距第一次相遇点285米，这条椭圆形跑道全长多少米？
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">1 / (2/3)</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/3) * (3/2) * (4/3) * (6/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">(4/3) / (4/5)</gadget>
<output>5/3 = around 1.666667</output>

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

<gadget id="calculator">(1/3) * (3/2) * (4/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">5 + 3</gadget>
<output>8</output>

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">(1/3) * (3/8)</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">(3/5) - (1/8)</gadget>
<output>19/40 = around 0.475</output>

<gadget id="calculator">285 / (19/40)</gadget>
<output>600</output>

<result>600</result>