Calculation: ((3/5)+(2/5)*(1-(3/8)))*20=how much.
计算：((3/5)+(2/5)*(1-(3/8)))*20=多少．
<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

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

<gadget id="calculator">3 / 8</gadget>
<output>3/8 = around 0.375</output>

<gadget id="calculator">1 - (3/8)</gadget>
<output>5/8 = around 0.625</output>

<gadget id="calculator">(2/5) * (5/8)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(3/5) + (1/4)</gadget>
<output>17/20 = around 0.85</output>

<gadget id="calculator">(17/20) * 20</gadget>
<output>17</output>

<result>17</result>