Calculati:
a) 13 grade-2 grade 13minute 57secunde =
b)37 grade 49minute 59 secunde + 59 grade 59 minute 59 secunde =
c) 32 grade 59 minute 58secunde x 3=
d) 13 grade 29 minute 42 secunde:2=
e) 49 grade-2grade 32 minute=
f) 29 grade 13minute 45 secunde : 5=