Evaluate
terms
in
summation
0
1
2
3
4
1
π
≈
12
389
404
344
116
838
964
769
400
621
280
991
1
131
379
202
490
552
979
877
435
552
947
122
965
839
872
2
approximate
value
of
π
:
3
.
1415926535897932384626433832795028841976638181330
exact
expansion
to
50
digits
:
3
.
1415926535897932384626433832795028841971693993751
