After selling one-fifth of the fruits in stock, the fruit shop then transports in another 66,000 catties of fruit. At this time, the stock of fruit is one-sixth more than the original stock. The original stock of fruit is tens of thousands of catties.
水果店卖出库存水果的五分之一后，又运进水果66000斤，这时库存水果比原库存量多六分之一，原来库存水果多少万斤．
<gadget id="calculator">11 / 30</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">66_000 / (11/30)</gadget>
<output>180_000</output>

<gadget id="calculator">180_000 / 10_000</gadget>
<output>18</output>

<result>18</result>