Total assets and average total assets are two different concepts.
Total assets are all assets of an enterprise, accounting refers to the sum of current assets and non-current assets in the balance sheet;
What is the average total assets? The average value of total assets at the beginning and end of the period is calculated as (total assets at the beginning+total assets at the end of the period) /2.
The formula can also be expressed as follows: ROE = net interest rate of total assets * equity multiplier = net profit/average net assets (average net assets are generally only available to listed companies, which refers to the average net assets of listed companies).
Net interest rate of total assets = net profit/average total assets
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