PLZ do this fast! I need to finish quick!!!!!!!! :/

1. convert 300 weeks to years

ANSWER: 40,000/6,957


2. convert 5 minutes to seconds

ANSWER: 300/1


3. convert 4,800 seconds to hours

ANSWER: 4/3


4. convert 714 years into minutes

ANSWER: 1,877,638,644/5


Can somebody covert the answers to mixed #s? Also label them, and give them their correct numbers.