Sammy's Sandwich Shop sells sandwiches for $9.55 each. It has monthly rental costs of $2,200 and employs 3 full-time staff for $1,600 in monthly salaries each. Other expenses average $400 per month.

On average, it costs $3.75 to make a sandwich. How many sandwiches does Sammy's need to sell each month in order to break-even? (Round up your answer.)