Google manufactures Nest Hello smart doorbells and sells them to intermediaries in the channel of distribution for $75. Each doorbell costs Google $20 to manufacture in addition to $750,000 in fixed costs. Calculate the following: contribution per unit and contribution margin percentage break-even volume in units and dollars unit volume and dollar sales necessary if Google's profit goal is $8 million unit volume and dollar sales necessary if Google's profit goal is 20% profit on sales