The required reserve ratio equals required reserves divided by what??
In general, divided by demand deposits (checking accounts) in the bank. (Note that, for banks, savings account deposits have a different reserve requirement than checking account deposits)
The required reserve ratio equals required reserves divided by total deposits.
To find this information, you will typically refer to the banking regulations set by the central bank of a country, such as the Federal Reserve in the case of the United States. These regulations outline the minimum percentage of deposits that banks must hold as reserves. This percentage is known as the required reserve ratio.
You can usually access this information from official sources, such as the central bank's website or publications. For example, the Federal Reserve publishes its regulations and updates on its website. By checking their publications or regulatory documents, you can find the current required reserve ratio.