Luningning calculates her accounting costs for the past year as $$450,000$ and her accounting profits for the last year as $-$$$50,000.$ What was her total revenue for the past year? $[11\mathrm{.}1\mathrm{.}1$ Calculating Accounting Profit$]$

$$500,000$

$$450,000$

$$0$

$$400,000$

Question $4$