In 2019, X Company sold 5,250 units of its only product. Total revenue was $1,345,575, total variable costs were $542,325, and total fixed costs were $735,000. In 2020, there are only two expected changes: variable costs will decrease by $4.70 per unit, and fixed costs will decrease by $24,900. How many units must X Company sell in 2020 in order to earn $33,000?