Please help me with these managerial accounting questions, thank you so much.

Jenny is the president of the West division of Courland Inc. In December she reviews the division's projected accounting statements for the year. If she does nothing, she expects the division to have:

$5.04 million in revenue, $2.13 million in variable costs, and $1.11 million in fixed costs, on volume of 96888 units. The division has $9.54 million in assets. Courland has a cost of capital of 11%.

a)Jenny will receive a $100,000 bonus if she can achieve an ROI of 23%. Clearly, she would like to do that. She considers the following schemes to earn the bonus.

First, West division could ship a lot of extra product to customers at year-end (called channel stuffing). Assume the extra products sell at the typical cost and have the typical variable cost. How many extra units would West division need to sell to reach the ROI target?