Hope Co$.$ manufactures products. Each unit sells for $$12\mathrm{.}75$ per bottle. Variable costs are $$5\mathrm{.}00$ per unit. Fixed manufacturing costs are $$1,900$ per month if the company produces output within its relevant range. Assume the company produces and sells $4,000$ units during the month. The company would like to earn a target profit of $$48,000.$ What number of units must the company sell to reach its target profit?