In 2019, X Company sold 6,150 units of its only product. Total revenue was $1,600,230, total variable costs were $688,185, and total fixed costs were $748,000. In 2020, there are only two expected changes: variable costs will increase by $3.70 per unit, and fixed costs will decrease by $50,000. How many units must X Company sell in 2020 in order to earn $31,000? 6333.62