A company is preparing its accounts to 30 November. The latest gas bill received by the company was dated 30 September and included usage charges for the quarter 1 June to 31 August of $5,700 and a service charge of $1,200 for the quarter 1 October to 31 December. It is estimated that the gas bill for the following quarter will be a similar amount.

What will be the amount of the accrual shown in the accounts at 30 November 2006?