(16/17)/{(9/16)/((13/17)-((7/16)-(4/17)))}.
(16/17)/{(9/16)/((13/17)-((7/16)-(4/17)))}．
<gadget id="calculator">16 / 17</gadget>
<output>16/17 = around 0.941176</output>

<gadget id="calculator">9 / 16</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">13 / 17</gadget>
<output>13/17 = around 0.764706</output>

<gadget id="calculator">7 / 16</gadget>
<output>7/16 = around 0.4375</output>

<gadget id="calculator">4 / 17</gadget>
<output>4/17 = around 0.235294</output>

<gadget id="calculator">(7/16) - (4/17)</gadget>
<output>55/272 = around 0.202206</output>

<gadget id="calculator">(13/17) - (55/272)</gadget>
<output>9/16 = around 0.5625</output>

<gadget id="calculator">(9/16) / (9/16)</gadget>
<output>1</output>

<gadget id="calculator">(16/17) / 1</gadget>
<output>16/17 = around 0.941176</output>

<result>16/17 = around 0.941176</result>