There is a batch of fruits in the fruit wholesale market. First, (2/5) of the total number of fruits in stock is transported away, and then 165 tons are transported in. At this time, the fruit stock in the wholesale market increased by 15% compared with the original one. How many tons of fruit did the fruit wholesale market originally stock?
水果批发市场有一批水果，先把库存水果总数的(2/5)运走，又运进165吨．这时，批发市场库存的水果比原来增加了15%．水果批发市场原来库存水果多少吨？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">2 / 5</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">(3/20) - (3/5)</gadget>
<output>-9/20 = around -0.45</output>

<gadget id="calculator">1 + (-9/20)</gadget>
<output>11/20 = around 0.55</output>

<gadget id="calculator">165 / (11/20)</gadget>
<output>300</output>

<result>300</result>