What is the value of (9/20)/((1/2)*((4/5)+(2/5))). How many
(9/20)/((1/2)*((4/5)+(2/5)))的值是多少．多少
<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

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

<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">(4/5) + (2/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">(1/2) * (6/5)</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">(9/20) / (3/5)</gadget>
<output>3/4 = around 0.75</output>

<result>3/4 = around 0.75</result>