1-(3/17)/(9/34)+(4/5).
1-(3/17)/(9/34)+(4/5)．
<gadget id="calculator">3 / 17</gadget>
<output>3/17 = around 0.176471</output>

<gadget id="calculator">9 / 34</gadget>
<output>9/34 = around 0.264706</output>

<gadget id="calculator">(3/17) / (9/34)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">1 - (2/3)</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) + (4/5)</gadget>
<output>17/15 = around 1.133333</output>

<result>17/15 = around 1.133333</result>