1. Add up all the profits: 3.2 + 1.8 + 6.4 = $11.4 million 2. Add up all the losses: 4.5 + 2.7 = $7.2 million 3. Profits - Losses = Total Profit so far $11.4 million - $7.2 million = $4.2 million 4. What happened in the last month? The net profit is $7.5 million. This means the last month must have had a profitable month to equal $7.5 million. 7.5 - 4.2 = $3.3 million profit in the last month