4. Calculate the gross margin on the sale of the product for human use in March under the constant gross-margin percentage NRV method. 5. Suppose that the separation process also yields 300 pints of a toxic byproduct. Tivoli currently pays a hauling company $5,000 to dispose of this by product. Tivoli is contacted by a firm interested in purchasing a modified form of this by product for a total price of $6,000. Tivoli estimates that it will cost about $30 per pint to do the required modification. Should Tivoli accept the offer?