could you show the steps on part B please

Waterways (This is a continuation of the Waterways Problem from Chapters 1 4.) WP5 Vice President for Sales and Marketing at Waterways Corporation is planning for production needs to meet sales demand in the coming year. He is also trying to determine how the company's profits might be increased in the coming year. This problem asks you to use cost-volume-profit concepts to help Waterways understand contribution margins of some of its products and decide whether to mass-produce any of them. Instructions (a) Waterways markets a simple water control and timer that it mass-produces. Last year, the company sold 696,000 units at an average selling price of $4.20 per unit. The variable costs were $1,900,080, and the fixed costs were $683,256. (1) What is the products contribution margin ratio? (Round to nearest whole percentage) (2) What is the company's break-even point in units and in dollars for this product? (3) What is the margin of safety, both in dollars and as a ratio? (Round to nearest whole percentage) many additional units would have to be sold to reach this income level? will income increase on this product? (4) If management wanted to increase its income from this product by 10%, how (5) If sales increase by 51,000 units and the cost behaviors do not change, how much (b) Waterways is thinking of mass-producing one of its special-order sprinklers. To do so would increase variable costs for all sprinklers by an average of $0.70 per unit. The company also estimates that this change could increase the overall number of sprinklers sold by 10%, and the average sales price would increase $0.20 per unit. Waterways currently sells 491,740 sprinkler units at an average selling price of $26.50. The manufacturing costs are $6,863,512 variable and $2,050,140 fixed. Selling and administrative costs are $2,651,657 variable and $794,950 fixed (1) If Waterways begins mass-producing its special-order sprinklers, how would this affect the company? (2) If the average sales price per sprinkler unit did not increase when the company began mass-producing the special-order sprinkler, what would be the effect on the company