(9/20)/6+(1/20)*(1/6).
(9/20)/6+(1/20)*(1/6)．
<gadget id="calculator">9 / 20</gadget>
<output>9/20 = around 0.45</output>

<gadget id="calculator">(9/20) / 6</gadget>
<output>3/40 = around 0.075</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">(1/20) * (1/6)</gadget>
<output>1/120 = around 0.008333</output>

<gadget id="calculator">(3/40) + (1/120)</gadget>
<output>1/12 = around 0.083333</output>

<result>1/12 = around 0.083333</result>