A software company, in 3 consecutive years, makes profits of -3 million dollars, 10 million dollars,

A software company, in 3 consecutive years, makes profits of -3 million dollars, 10 million dollars, and -2 million dollars. What was its profit over the 3 year period?

Profit = -3,o00,000 + 10,000,000 - 2,000,000
Profit = 5,000,000