Calculation: (1/(1*2))+(1/(1*2*3))+(1/(1*2*3*4))+…+(1/(1*2*3* 4*5*6*7*8)).
计算：(1/(1*2))+(1/(1*2*3))+(1/(1*2*3*4))+…+(1/(1*2*3*4*5*6*7*8))．
<gadget id="calculator">1 / 56</gadget>
<output>1/56 = around 0.017857</output>

<gadget id="calculator">1 - (1/56)</gadget>
<output>55/56 = around 0.982143</output>

<result>55/56 = around 0.982143</result>