Simple calculation: 6*(7/12)-(9/20)*6+(11/30)*6.
简便计算：6*(7/12)-(9/20)*6+(11/30)*6．
<gadget id="calculator">7 / 12</gadget>
<output>7/12 = around 0.583333</output>

<gadget id="calculator">6 * (7/12)</gadget>
<output>7/2 = around 3.5</output>

<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(9/20) * 6</gadget>
<output>27/10 = around 2.7</output>

<gadget id="calculator">(7/2) - (27/10)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">11 / 30</gadget>
<output>11/30 = around 0.366667</output>

<gadget id="calculator">(11/30) * 6</gadget>
<output>11/5 = around 2.2</output>

<gadget id="calculator">(4/5) + (11/5)</gadget>
<output>3</output>

<result>3</result>