The following information is used for the next TWO questions.

Assume that you have sold two Australian dollar $($AUD$)$ futures contracts at the

closing price on day $t=0.$ Over the subsequent days, the futures price has evolved

as shown in the following table. All values are the closing futures price for that

day.

Each futures contract on the Australian dollar has a size of AUD$125,000,$ an initial

margin of CHF$2,000,$ and a maintenance margin of CHF$1,300.$ In addition, assume

that you never withdraw any excess funds from your margin account and always

meet any required margin calls.

Question $3$ answer is $500$

Question $4$

What is the balance on your margin account at the end of day $t=4?$ please answer Question $4$ which has answer of $6425??$