(1/2+1/3+1/4+1/5+1/6+1/7+1/8)+(1/9+1/10+1/11+1/12)+(1/13+1/14+1/15) =481/280+763/1980+587/2730 ≈2.318228993 (1/2+1/3+1/4+1/5+1/6+1/7+1/8+1/9+1/10+1/11+1/12+1/13+1/14+1/15)*4004 =(481/280+763/1980+587...