In 2019, X Company sold 5,150 units of its only product. Total revenue was $1,351,360, total variable costs were $567,530, and total fixed costs were $666,000. In 2020, there are only two expected changes: variable costs will decrease by $4.60 per unit, and fixed costs will decrease by $42,000. How many units must X Company sell in 2020 in order to earn $30,000?