A company's new product is sold for $16.50 per unit. Product sales in the United States earn $400,000 and product sales in Europe earn $230,000. How many units does it sell altogether in the United States and Europe?

add the 2 sales together than divide by unit price

400,000 + 230,000 = 630,000

630,000/16.50 = 38181.81

round down to 38,181 units since you cant sell 0.81 of a unit

of course the answer may be rounded up to 38182 units. depending on the teacher