Answer:Step 1: Calculate the DiscountThe discount can be calculated using the formula:Discount=Original Price×(Discount Rate100)Discount=Original Price×( 100Discount Rate )Substituting the values:Discount=800×(18100)=800×0.18=₱144Discount=800×( 10018 )=800×0.18=₱144Step 2: Calculate the Sale PriceThe sale price can be calculated by subtracting the discount from the original price:Sale Price=Original Price−DiscountSale Price=Original Price−DiscountSubstituting the values:Sale Price=800−144=₱656Sale Price=800−144=₱656SummaryDiscount: ₱144Sale Price: ₱656