A ceramics manufacturer sold cups last year for $7.50 each. The variable cost of manufacturing was $2.25 per unit. The company needed to sell 20,000 cups to break even. Its net income was $5,040. This year, the company expects the price per cup to be $9.00; the variable manufacturing cost to increase by 33.3%; and the fixed costs to increase by 10%. How many cups (rounded) does the company need to sell this year to break even?