Please add (excel)steps if possible! much appreciate!

You have entered into a single short position in lead futures. Each futures contract covers 200 units of lead. The initial margin for the futures contract is 3000.00, while the maintenance margin is 2200.00. The lead futures price (per unit) was 100.50 when you entered into the contracts. One day later, it was 100.92, two days later 101.54, and three days later 102.29. Assuming you made all margin calls (if any), how much money is in your margin account after day 3 ? 3442.003358.002642.004158.00