Use the following to answer questions 34 39 SC reports the following income statement results: Sales Operating expense Net income Sales returns & allowances Gross profit Interest revenue $745,800 298,600 50,370 15,800 326,310 50,000 34. $ _Calculate Net sales: 35. $ _Calculate Cost of Goods Sold 36. $ _Calculate operating income 37. $ Calculate Income before Income tax (IBT) 38. _%. Calculate the gross profit margin (one decimal place) 39. _%. Calculate the net profit margin (one decimal place)