At the beginning of this month, the balance of Carl's checking account was $437.55. So far this month, he has received a paycheck via direct deposit of $687.22, was charged a monthly service fee by his bank of $15.00, used a debit card linked to his account to make a purchase of $62.11, wrote a check for $88.14 that has already been deposited, and deposited a check for $75.00. What is the current balance of Carl's checking account?