julia> using RealContinuedFractions
julia> fromcontfrac(contfrac(π, 4))
355//113
julia> fromcontfrac(contfrac(big(π), 25))
8958937768937//2851718461558
julia> cf = contfrac(6283//2000)
ContinuedFraction{Vector{Int64}}([3, 7, 14, 1, 8, 2])
julia> fromcontfrac(cf)
6283//2000
julia> fromcontfrac(Float64, cf)
3.1415
julia> convergents(contfrac(π, 5))
5-element Vector{Rational{Int64}}:
3//1
22//7
333//106
355//113
103993//33102