Помогите решить 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90

Question

Помогите решить 1/2+1/6+1/12+1/20+1/30+1/42+1/56+1/72+1/90

Answer 1

1:2+1:6+1:12+1:20+1:30+1:42+1:56+1:72+1:90=1.93667