A state university locks in costs for a student once a student starts attending the university. The total cost is $23,500. A student has the following help in covering the costs of school. An academic scholarship of $8,200.
Other scholarships and grants of $7,400.
Grandparents pay $1,000.
What is the amount that the student will need to save every month in order to pay off the remaining costs in 10 months?

$690

$820

$1,660

$2,350