There are a batch of apples and pears in the fruit shop. The pears are 200 kg more than the apples. After the two kinds of fruits are sold for 40 kg each, the quality of the apples is equal to that of the pears (5/7). How many kg are the original pears in the fruit shop?
水果店里有一批苹果和梨，梨比苹果多200千克，这两种水果各卖出40千克后，苹果的质量的梨的(5/7)，水果店里原有梨多少千克？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">(5/7) * 40</gadget>
<output>200/7 = around 28.571429</output>

<gadget id="calculator">40 - (200/7)</gadget>
<output>80/7 = around 11.428571</output>

<gadget id="calculator">200 + (80/7)</gadget>
<output>1_480/7 = around 211.428571</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(1_480/7) / (2/7)</gadget>
<output>740</output>

<result>740</result>