What is the result of the following formulas (1/2)
下列各式计算结果为(1/2)的是多少
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<gadget id="calculator">1 / 14</gadget>
<output>1/14 = around 0.071429</output>

<gadget id="calculator">(4/7) - (1/14)</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>