>>> from parquing1 import preu1
>>> round(preu1(39), 2)
1.8
>>> round(preu1(61), 2)
1.82
>>> round(preu1(220), 2)
5.0
>>> round(preu1(563), 2)
11.86
>>> round(preu1(600), 2)
12.6
>>> round(preu1(601), 2)
13.0
>>> round(preu1(1500), 2)
13.0