There are 2 guys to solve this question you either find out what you make in a year on the first caseof $4,350 per month or see how much you make in 1 month on the year you earn the $52,800.
How much will you make in a year if you earn $4,350 in one month
compare both values
In this case you would rather make $52,800 in one year than make $4,350 in a month.