Please help! Cannot figure out what im doing wrong.

Andretti Company has a single product called a Dak. The company normally produces and sells 86,000 Daks each year at a selling price of $46 per unit. The company's unit costs at this level of activity are given below: $ 7.50 Direct materials Direct labor Variable manufacturing overhead Fixed manufacturing overhead Variable selling expenses Fixed selling expenses 10.00 2.90 8.00 (S688,000 total) 4.70 4.50 ($387,000 total) Total cost per unit 37.60 A number of questions relating to the production and sale of Daks follow. Each question is independent. Required: 1-a. Assume that Andretti Company has sufficient capacity to produce 116,100 Daks each year without any increase in fixed manufacturing overhead costs. The company could increase its sales by 35% above the present 86,000 units each year if it were willing to increase the fixed selling expenses by $140,000. Calculate the incremental net operating income. (Round all dollar amounts to 2 decimal places. 30,100 20.90 Increased sales in units ontribution margin per unit Incremental contribution margin Less added fixed selling expense Incremental net operating income $ 629,090.00 140,000.00 $ 489,090.00