intrest rate in question 1) is 10% but I think it needs to be divided by 12 so 0.8333

A crew of two, each has to complete 60 hours of safety training per year (in practice, usually done during the winter when construction is slow). Assume that the training is done during overtime at 1.5 times the base pay (but overhead remains the same) and is done all at once at the end of the year. Using the interest rate from Question 1, how much does the training add to the total costs each month