A fraction is equal to (2/3), and the sum of the numerator and denominator is 40. This fraction is ((())/(())).
一个分数与(2/3)的大小相等，分子和分母的和是40，这个分数是((())/(()))．
<gadget id="calculator">3 + 2</gadget>
<output>5</output>

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

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">40 * (3/5)</gadget>
<output>24</output>

<gadget id="calculator">(2/5) / 24</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">40 * (1/60)</gadget>
<output>2/3 = around 0.666667</output>

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