((3/4)-((7/16)-0.25))*(8/9).
((3/4)-((7/16)-0.25))*(8/9)．
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

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

<gadget id="calculator">(7/16) - 0.25</gadget>
<output>0.1875</output>

<gadget id="calculator">(3/4) - 0.1875</gadget>
<output>0.5625</output>

<gadget id="calculator">8 / 9</gadget>
<output>8/9 = around 0.888889</output>

<gadget id="calculator">0.5625 * (8/9)</gadget>
<output>0.5</output>

<result>0.5</result>