Advance Inc. manufactures beach umbrellas and reclining beach chairs. Due to unseasonably warm weather, Advance received a large order for 400 umbrellas and 2,200 chairs. Each umbrella sells for $48, and each chair sells for $60. The umbrellas require 1 machine hour to manufacture, and the chairs require 1.5 hours. The unit variable cost for umbrellas is $18, and the unit variable cost for chairs is $24. Advance has 1,225 machine hours available this month. 

How many of each product should the company make this month to maximize contribution margin?