Clifford is paid $4.50 per hour plus time and a half on holidays and makes an average of 18% tips on his food sales as a server at the local seafood restaurant. This is modeled by the expression 4.50(x) + 4.50(1.5)(y) + 0.18(z). What is Clifford's gross pay if he worked 22 regular hours and 8 holiday hours and had $1,892 in food sales?