please, Help with the following question. Please, provide as much of a detailed solution as possible. Thanks!

Pure Water Products produces three types of water filter: a faucet- mounted filter, a pitcher-filter, and an under-sink filter. Revenue and cost information for each product appears below: the faucet-mounted filter is sold for $51 per unit and has variable costs of $24 per unit the pitcher-filter sells for $39 per unit and has variable costs of $11 per unit the under-sink filter has a selling price of $62 per unit and has variable costs of $48 per unit fixed costs total $182,520 per year During the most recent year, Pure Water Products sold 3,200 faucet-mounted filters, 6,800 pitcher-filters, and 5,300 of the under-sink filters. Calculate the number of units of the under-sink filter product that needed to be sold in the most recent year in order for Pure Water Products to earn a profit equal to $119,340