x-(3/4)x+1.6=12.
x-(3/4)x+1.6=12．
<gadget id="calculator">12 - 1.6</gadget>
<output>10.4</output>

<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/4)</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">10.4 / (1/4)</gadget>
<output>41.6</output>

<result>41.6</result>