Integer and fractional part : propfrac propFrac

propfrac(A/B) or propFrac(A/B) returns

q + $${\frac{{r}}{{b}}}$$  with  0 $$\leq$$ r < b

if $${\frac{{A}}{{B}}}$$ = $${\frac{{a}}{{b}}}$$ with gcd(a, b) = 1 and a = bq + r.
For rational fractions, cf. 1.28.8.
Input :

propfrac(42/15)

Output :

2+4/5

Input :

propfrac(43/12)

Output :

3+7/12