On March $22,2023,$ Bijan Bharati entered into $20$ long contracts on Micro Bitcoin Futures at

$$28,\frac{670}{?}$ Bitcoin, with each contract for $0\mathrm{.}1$ Bitcoin. The following table contains some

information for the first $7$ days after the contract initiation. The initial margin was $$500$ per

contract, and the maintenance margin is $85\%$ of the initial margin.

a$)$ How much were the initial and maintenance margins for the $20$ contracts?

b$)$ Fill out all the blanks.

c$)$ Suppose that the Bitcoin price was $$28,985$ on day $1$ and $$28,865$ on day $2.$ Can Bijan

withdraw fund from his margin account? If yes, by how much?