3-(7/12)-(5/12).
3-(7/12)-(5/12)．
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">5 / 12</gadget>
<output>5/12 = around 0.416667</output>

<gadget id="calculator">3 - (7/12) - (5/12)</gadget>
<output>2</output>

<result>2</result>