Two snails A and B crawl from opposite ends of a bamboo pole at the same time, and meet each other after (7/2) minutes. If A crawls for 3 minutes and B crawls for 2 minutes, at this time, there are still (9/35) snails left in full length. OK. It is known that a snail crawls (4/7) cm per minute, how long is this bamboo pole in cm?
甲、乙两蜗牛同时从一根竹竿的两端相对爬行，经(7/2)分钟相遇，如果甲爬3分钟，乙爬2分钟，这时，还剩全长的(9/35)没行．已知甲蜗牛每分钟爬行(4/7)cm，这根竹竿长多少cm？
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">9 / 35</gadget>
<output>9/35 = around 0.257143</output>

<gadget id="calculator">7 / 2</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">1 / (7/2)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/7) * 2</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 - (9/35) - (4/7)</gadget>
<output>6/35 = around 0.171429</output>

<gadget id="calculator">3 - 2</gadget>
<output>1</output>

<gadget id="calculator">(4/7) / (6/35) / 1</gadget>
<output>10/3 = around 3.333333</output>

<result>10/3 = around 3.333333</result>