(8/17)/23+(1/23)*(9/17).
(8/17)/23+(1/23)*(9/17)．
<gadget id="calculator">8 / 17</gadget>
<output>8/17 = around 0.470588</output>

<gadget id="calculator">(8/17) / 23</gadget>
<output>8/391 = around 0.02046</output>

<gadget id="calculator">1 / 23</gadget>
<output>1/23 = around 0.043478</output>

<gadget id="calculator">9 / 17</gadget>
<output>9/17 = around 0.529412</output>

<gadget id="calculator">(1/23) * (9/17)</gadget>
<output>9/391 = around 0.023018</output>

<gadget id="calculator">(8/391) + (9/391)</gadget>
<output>1/23 = around 0.043478</output>

<result>1/23 = around 0.043478</result>