Table $2\mathrm{.}1$ Operation of margin account for a long position in two gold futures

contracts. The initial margin is $$6,000$ per contrict, or $$12,000$ in total; the

maintenance margin is $$4,500$ per contract, or $$9,000$ in total. The contract is entered

into on Day $1$ at $$1,450$ and closed out on Day $16$: it $$1,426\mathrm{.}90$