Hello I am having trouble understanding how to do the math for this ag financial accounting question. I cannot seem to figure out where to start to calculate the steps to the problem.

Calculate Net Income for each of the situations below. a. Revenues = $1,350,000; Expenses = $950,000. b. Revenues = $1,350,000; Expenses = $950,000; Gains = $10,000. c. Revenues = $1,350,000; Expenses = $950,000; Gains = $10,000; Losses = $5,000