The assessor had agreed that Mr Benson's employment with Exxon Limited is a foreign sourced employment. During the year ended 31 March 2020, he had spent 260 days and 65 days working in Hong Kong and USA respectively. The remaining time was his annual leave. He spent his vacation in Hawaii. Mr Benson received remuneration of HK$800,000 for the whole year. Advise the amount of chargeable income for Mr Benson for Hong Kong salaries tax purpose.