how can I do this without excel?

What is the annual operating cash flow (OCF) for a 10-year project that has annual sales of $700,000, its variable costs are 70% of sales and has annual fixed costs of $150,000. The project requires new equipment at a cost of $40,000 and installation costs of $3,000 and a plant that costs $100,000. Depreciation is under the straight line method and the equipment has an estimated life of 10 years and the plant an estimated life of 30 years. The tax rate is 20% and the discounting rate is 10%. In your answer, use commas to separate thousands, do not use the dollar $ sign, and round to the nearest dollar. For example, if your answer is $34,456.729 then enter 34,457. If answer is a negative cash flow, enter the minus sign in front of the first number (do not enter a parenthesis to represent a negative number). For example, if your answer is -$2,511.00 then enter -2,511 Your