Joseph started operating a service business on April 1, 2021 with an initial cash investment of P400,000. The business provided P800,000 of service in April. Collections were made except for P200,000 which were collected the following month. Expense were incurred for P400,000, including P100,000 which are to be paid next month. Joseph withdrew P60,000 from the business. In April 30, 2021, what is the capital of Joseph under the cash basis of accounting?