Golden Chemicals ships products to $21$ customers. The table below shows the annual demand of

each customer. Golden Chemicals uses Highway King, a trucking company, for all its shipments.

Each truck has a maximum capacity of $50,000$ pounds. Highway King charges a fixed rate, $$350$

per truck, regardless of the quantity shipped on the truck. Highway King charges an additional

$$50$ for each drop$-$off. For example, if a truck makes one drop$-$off, the total charge would be

$$400.$ For another example, if a truck makes four drop$-$offs, the total charge would be $$550.$

Multiple shipments to a customer may be necessary to meet the customer$$s annual demand. The

amount of chemicals $($in pounds$)$ shipped to the customer in different shipments is the same