Apples, pears, and oranges are 100 kilograms in total. The weight of apples is three times that of pears, and the weight of oranges is 8 kilograms less than half that of pears. How many kilograms are there in oranges?
苹果、梨、桔子三种水果共100千克，其中苹果的重量是梨的3倍，桔子的重量比梨的一半少8千克，其中有桔子多少千克？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">8 + 100</gadget>
<output>108</output>

<gadget id="calculator">1 + 3 + (1/2)</gadget>
<output>9/2 = around 4.5</output>

<gadget id="calculator">108 / (9/2)</gadget>
<output>24</output>

<gadget id="calculator">(1/2) * 24</gadget>
<output>12</output>

<gadget id="calculator">12 - 8</gadget>
<output>4</output>

<result>4</result>