The weight of an orange is (3/5) that of an apple, the weight of a banana is (1/2) that of an orange, and the weight of a banana is that of an apple.
橘子的重量是苹果的(3/5)，香蕉的重量是橘子的(1/2)，香蕉的重量是苹果的多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">(3/5) * (1/2)</gadget>
<output>3/10 = around 0.3</output>

<result>3/10 = around 0.3</result>