A company has a financial year end of 30 June 2020. At 1 July 2019, the company had a prepayment for gas of 1,000. During the year, the company paid bills totalling 6,000. At 30 June 2020, the directors estimated that the cost of the gas used but not invoiced to the company was 1,200. What is the expense charge for gas that the company should recognize in its accounts for the year 1 July 2019 to 30 June 2020