Calculation: (1/3)+(1/8)+(1/15)+---+(1/120)=how much.
计算：(1/3)+(1/8)+(1/15)+---+(1/120)=多少．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">1 / 11</gadget>
<output>1/11 = around 0.090909</output>

<gadget id="calculator">1 / 12</gadget>
<output>1/12 = around 0.083333</output>

<gadget id="calculator">(1/2) - (1/11) - (1/12)</gadget>
<output>43/132 = around 0.325758</output>

<gadget id="calculator">1 + (43/132)</gadget>
<output>175/132 = around 1.325758</output>

<gadget id="calculator">(1/2) * (175/132)</gadget>
<output>175/264 = around 0.662879</output>

<result>175/264 = around 0.662879</result>