Add (1/4) to (1/5) of (5/2), and divide (1/2) by the sum. What is the result?
(5/2)的(1/5)加上(1/4)，所得的和除(1/2)，结果是多少？
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(5/2) * (1/5)</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(1/2) + (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">(1/2) / (3/4)</gadget>
<output>2/3 = around 0.666667</output>

<result>2/3 = around 0.666667</result>