I am not understanding this can someone please help me solve this step by step.

Pure Water Products produces three types of water filter: a faucetmounted 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 $62 per unit and has variable costs of $46 per unit - the under-sink filter has a selling price of $39 per unit and has variable costs of $11 per unit - fixed costs total $183,592 per year During the most recent year, Pure Water Products sold 3,200 faucet-mounted filters, 6,800 pitcher-filters, and 5, 400 of the under-sink filters. Calculate the margin of safety reported by Pure Water Products durin the most recent year