(1/6)+(1/24)+(1/60)+(1/120)+(1/210)+(1/84).
(1/6)+(1/24)+(1/60)+(1/120)+(1/210)+(1/84)．
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">1 / 24</gadget>
<output>1/24 = around 0.041667</output>

<gadget id="calculator">1 / 60</gadget>
<output>1/60 = around 0.016667</output>

<gadget id="calculator">1 / 120</gadget>
<output>1/120 = around 0.008333</output>

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

<gadget id="calculator">1 / 84</gadget>
<output>1/84 = around 0.011905</output>

<gadget id="calculator">(1/6) + (1/24) + (1/60) + (1/120) + (1/210) + (1/84)</gadget>
<output>1/4 = around 0.25</output>

<result>1/4 = around 0.25</result>