Purchases are forecast to be $585,000 a month beginning in July. In May they were $675,000, and in June they are expected to be $607,500. The purchases are paid in 40 days. Labour expense will be paid as incurred and will be $195,000 a month. Other expenses of manufacturing will also be paid as incurred and are expected to be $375,000 a month. Cost of goods sold has regularly been 70 percent of sales.

How do I calculate the payment ?