Calculation: (1/(10*11))+(1/(11*12))+(1/(12*13))+(1/(13*14))+(1/(14*15) ).
计算：(1/(10*11))+(1/(11*12))+(1/(12*13))+(1/(13*14))+(1/(14*15))．
<gadget id="calculator">10 * 11</gadget>
<output>110</output>

<gadget id="calculator">1 / 110</gadget>
<output>1/110 = around 0.009091</output>

<gadget id="calculator">11 * 12</gadget>
<output>132</output>

<gadget id="calculator">1 / 132</gadget>
<output>1/132 = around 0.007576</output>

<gadget id="calculator">12 * 13</gadget>
<output>156</output>

<gadget id="calculator">1 / 156</gadget>
<output>1/156 = around 0.00641</output>

<gadget id="calculator">13 * 14</gadget>
<output>182</output>

<gadget id="calculator">1 / 182</gadget>
<output>1/182 = around 0.005495</output>

<gadget id="calculator">14 * 15</gadget>
<output>210</output>

<gadget id="calculator">1 / 210</gadget>
<output>1/210 = around 0.004762</output>

<gadget id="calculator">(1/110) + (1/132) + (1/156) + (1/182) + (1/210)</gadget>
<output>1/30 = around 0.033333</output>

<result>1/30 = around 0.033333</result>