How many times have I said this? You MUST learn to use Basic Principles. Draw a map and reason it out.

i = 3.5% = 0.035

<== Monthly interest rate.

Note: I'll just use 'i' in order to make the notation more convenient. Just remember this is the MONTHLY rates of interest.

t = time in years

t = 0 ==> 600.00 <== There's the loan.

<== There's the value after two years (24 months).

Pull your Annuity Immediate formula out of your hat...(or learn to derive it!)

P = Equal Monthly Payment

Note: Remember, this is a monthly rate. 'v' is the MONTHLY rate of discount.

or

Solve for 'P' and you nearly are done.