An apple weighs 80 kilograms, which is 1/3 more than an orange. How many kilograms does an orange weigh? What is the column
苹果有80千克，比桔子多(1/3)，桔子有多少千克？列式为多少
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 + (1/3)</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">80 / (4/3)</gadget>
<output>60</output>

<result>60</result>