Calculation: (1/52)+(47/(52*51))+((47*46)/(52*51*50))+((47*46*45)/(52*51*50* 49))+...+((47*46*45*...*2*1)/(52*51*50*...*6*5)).
计算：(1/52)+(47/(52*51))+((47*46)/(52*51*50))+((47*46*45)/(52*51*50*49))+…+((47*46*45*…*2*1)/(52*51*50*…*6*5))．
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>