An investor enters a long position in a Bitcoin April 2023 futures contract at $23,450. Each contract controls 5 bitcoins. The initial margin for each contract is $30,800, the maintenance margin is $28,000. The futures price changes to $23,020 at the end of the first day and $22,752 on the end of the second day. Compute the amount in the margin account at the end of each day for the long position and any variation margin needed.

(Please provide a step-by-step solution on how to solve this problem with a calculator, thank you!)