When transporting a batch of fruit, 20% of it was shipped for the first time. If another 30 tons are shipped, then (1/3) of this batch of fruit has already been shipped. How many tons is this batch of fruit?
运一批水果，第一次运了20%，如果再运30吨，那么这时已运的是这批水果的(1/3)，这批水果有多少吨？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/3) - (1/5)</gadget>
<output>2/15 = around 0.133333</output>

<gadget id="calculator">30 / (2/15)</gadget>
<output>225</output>

<result>225</result>