Give the step-by-step reasoning process and then the final answer. Tom dances 4 times a week for 2 hours at a time and does this every year for 10 years. How many hours did he dance?
He dances 4 * 2 = 8 hours per week. He dances for 52 * 10 = 520 weeks. So in total he danced for 8 * 520 = 4160 hours.
The final answer: 4160.