(2/3)*((9/10)+((7/16)-(1/4))).
(2/3)*((9/10)+((7/16)-(1/4)))．
<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

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

<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">(7/16) - (1/4)</gadget>
<output>3/16 = around 0.1875</output>

<gadget id="calculator">(9/10) + (3/16)</gadget>
<output>87/80 = around 1.0875</output>

<gadget id="calculator">(2/3) * (87/80)</gadget>
<output>29/40 = around 0.725</output>

<result>29/40 = around 0.725</result>