Which of the following numbers is closest to (1/2)? How many
下面哪一个数最接近(1/2)？多少
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">39 / 80</gadget>
<output>39/80 = around 0.4875</output>

<gadget id="calculator">(1/2) - (39/80)</gadget>
<output>1/80 = around 0.0125</output>

<gadget id="calculator">1 / (1/80)</gadget>
<output>80</output>

<result>39/80 = around 0.4875</result>