The weight of pears sold in the fruit shop is that of apples (5/7). Pears are sold 30 kilograms less than apples. How many kilograms are pears sold for?
水果店里卖出的梨的重量是苹果的(5/7)，梨比苹果少卖30千克，梨卖了多少千克？
<gadget id="calculator">5 / 7</gadget>
<output>5/7 = around 0.714286</output>

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

<gadget id="calculator">30 / (2/7)</gadget>
<output>105</output>

<gadget id="calculator">105 - 30</gadget>
<output>75</output>

<result>75</result>