Magnolia Manufacturing makes wing components for large aircraft. Kevin Choi is the production manager, responsible for manufacturing, and Michelle Michaels is the marketing manager. Both managers are paid a flat salary and are eligible for a bonus. The bonus is equal to $1$ percent of their base salary for every $10$ percent profit that exceeds a target. The maximum bonus is $5$ percent of salary. Kevin$$s base salary is $$180,000$ and Michelle$$s is $$240,000.$

The target profit for this year is $$6$ million. Kevin has read about a new manufacturing technique that would increase annual profit by $20$ percent. He is unsure whether to employ the new technique this year, wait, or not employ it at all. Using the new technique will not affect the target.

Required:

a$.$ Suppose that profit without using the technique this year will be $$6$ million. By how much will Kevin$$s and Michelle$$s bonus change if Kevin decides to employ the new technique?

b$.$ Suppose that profit without using the technique this year will be $$8\mathrm{.}5$ million. By how much will Kevin$$s and Michelle$$s bonus change if Kevin decides to employ the new technique?