To calculate the total calories burned, you need to first determine the total hours played over the three days. If you played for 1 hour on Monday, 1 hour on Tuesday, and 1 hour on Wednesday, that totals to 3 hours. Since you burn 600 calories per hour, you would multiply 600 by 3, resulting in a total of 1800 calories burned over the three days. This calculation is important for understanding how physical activity contributes to calorie expenditure.