The kindergarten bought some apples, ate (1/5), and left 80 kilograms. How many kilograms of apples did the kindergarten buy?
幼儿园买来一些苹果，吃了(1/5)，还剩80千克，幼儿园买来多少千克苹果？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">80 / (4/5)</gadget>
<output>100</output>

<result>100</result>