The quality of the pears shipped from the fruit shop is (4/5) that of apples. After selling 30 kg of apples and (1/4) of pears, the remaining pears and apples have the same quality. How many kilograms of apples did the fruit shop ship?
水果店运来的梨的质量是苹果的(4/5)，卖出30千克苹果和梨的(1/4)后，剩下的梨和苹果的质量相等．水果店运来多少千克苹果？
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(4/5) * (1/4)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) + (1/5)</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">30 / (2/5)</gadget>
<output>75</output>

<result>75</result>