Calculate the cost of the following purchase order for Kids apparel where the discount of dresses is $25\%$ off the list price and the discount on sweaters is $40\%$ off the list price. The buyer placed the following quantities of each item. Calculate the original cost of the order and the discounted cost of the order based on these quantities.

Answer the questions below:Spring dresses Buyer bought $400$ pcs at $$45$ original priceSweaters Buyer bought $250$ pcs at $$25$ original price

a$.$What is the original cost of the order?

b$.$What is the discounted cost of the order