Lesian Company manufactures a product that gives rise to a by-product called Robon. The only costs associated with Robon are additional processing costs of P1.00 for each unit. Lesian accounts for Robon sales first by deducting its separable costs from such sales and then by deducting this net amount from the cost of sales of the major product. For the past year, 2,000 units of Robon were produced which were sold for P3.00 each. Sales revenue and cost of goods sold from the main product were P500,000 and P400,000, respectively. The gross margin after considering the by-product sales and costs would be: