Calculate with a simple method: ((1/2)+(1/3)*(1/4)-(7/12))*2.4.
用简便方法计算：((1/2)+(1/3)*(1/4)-(7/12))*2.4．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

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

<gadget id="calculator">(1/3) * (1/4)</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">(1/12) - (7/12)</gadget>
<output>-1/2 = around -0.5</output>

<gadget id="calculator">(1/2) + (-1/2)</gadget>
<output>0</output>

<gadget id="calculator">0 * 2.4</gadget>
<output>0</output>

<result>0</result>