Excel: Making a formula to discount total cost

We are making a spreadsheet for a company, and I figured out all the other numbers but the final total after discount I am struggling to come up with a Formula

For example: discount can either be 10% or 0%, then we have to take the total before the discount first, then for the last one we have to figure out the total after the discount

An example would be a discount 10% Total before discount of 1,860, then need to find a fourmla to find the total after discount

Any Ideas or takes?