$(4$ pts$.)$ Eban Wares is a division of a major corporation. The following data are for the

latest year of operations:

Sales

$$12,300,000$

Net operating income.

$$1,115,000$

Average operating assets

$$5,200,000$

The company's minimum required rate of return

$14\%$

Required:

a$.$ What is the division's margin?

b$.$ What is the division's turnover?

c$.$ What is the division's return on investment $($ROI$)?$

d$.$ What is the division's residual income?