To calculate, write the result as the sum of several reduced fractions whose denominator is a prime number: (1/9)+(5/9)-(1/19)+(1/95)-(1/1995)=how much.
计算，把结果写成若干个分母是质数的既约分数之和：(1/9)+(5/9)-(1/19)+(1/95)-(1/1995)=多少．
<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">1 / 19</gadget>
<output>1/19 = around 0.052632</output>

<gadget id="calculator">(5/9) - (1/19)</gadget>
<output>86/171 = around 0.502924</output>

<gadget id="calculator">1 / 95</gadget>
<output>1/95 = around 0.010526</output>

<gadget id="calculator">1 / 1_995</gadget>
<output>1/1_995 = around 0.000501</output>

<gadget id="calculator">(1/95) - (1/1_995)</gadget>
<output>4/399 = around 0.010025</output>

<gadget id="calculator">(1/9) + (86/171) + (4/399)</gadget>
<output>83/133 = around 0.62406</output>

<result>83/133 = around 0.62406</result>