To find the total amount of cheese made, you simply need to add the amounts of cheddar cheese and Swiss cheese together.
Cheddar cheese: 379.983 ounces
Swiss cheese: 425.602 ounces
Now, perform the addition:
\[ 379.983 + 425.602 = 805.585 \text{ ounces} \]
So, the cheese maker made a total of 805.585 ounces of cheese.