I am doing a geologic time scale for class and comparing it to a soccer field that is 120 yards….

I am doing a geologic time scale for class and comparing it to a soccer field that is 120 yards. Here are the questions. The math part is giving me a headache.

Some Important Dates in the History of the Earth
1) Origin of the earth – 4,600,000,000 years ago
2) Oldest rocks one earth – 4,000,000,000 years ago
3) First eukaryotic cells – 2,100,000,000 years ago
4) First Metazoans – 635,000,000 years ago
5) End of the PreCambrian – 542,000,000
6) First Land Animals – 428,000,000
7) End of Mesozoic – 66,000,000
8) Earliest humans – 2,000,000
9) End of the Ice Age – 11,700 years ago
10) My birthday – June 9, 1992