>>176

Rは１６桁が限度

> print(data.frame(total),digits=16)
total
1001 20.50000000103054
1002 20.49999999896938
1003 20.50000000103054
1004 20.49999999896938
1005 20.50000000103054
1006 20.49999999896938
1007 20.50000000103054
1008 20.49999999896938
1009 20.50000000103054
1010 20.49999999896938