Please I don't want a Google solution because the teacher will give me a zero

I want a solution with a computer line, please

pleas answer all questions thank you

Calculate the cost of goods sold and gross profit and net profit from the following details.

Particulars Amount (OMR)

Stock (01-01-2018) 12,000

Purchases 50,000

Purchases Returns 3,500

Direct Wages 4,000

Office Salaries 2,800

Carriage inwards 2,400

Depreciation on Fixed assets 600

Office expenses 1,600

Stock (31-12-2018) 18,000

Sales 68,000

Sales Returns 2,000