Mrs. Pillay’s cheque account balance is -R900. Her salary was deposited into her cheque account. The new balance is R8,200 after her salary was deposited.

- Explain the term "deposit" according to the given context.
- Determine Mrs. Pillay’s salary that was deposited into her bank account.
- Calculate the deposit fee for this type of account: R5 + 1% of the deposit amount.