Please answer these questions step by step.show all working.

2. The Andrea S. Fault Seismometer Company is an all-equity-financed firm. It earns monthly, after taxes, $24,000 on sales of $880,000. The tax rate of the company is 40 percent The company's only product, "The Desktop Seismometer," sells for $200, of which $150 is variable cost. a. What is the company's monthly fixed operating cost? h. What is the monthly operating break-even point in units? In dollars? c. Compute the degree of operating leverage (DOL) versus quantity produced and sold for the following possible monthly sales levels: 4,000 units; 4,400 units; 4,800 units; 5,200 units: 5.600 units; and 6,000 units