[Question]: 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?
[Answer]: 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.
So the answer is 4160.

[Question]: Lidia bought a new tablet, and she needs to buy some apps for it. One app costs $4 on average, and Lidia needs 15 of them. She has $66 for this purpose. How much money will she be left with if she buys all the apps she needs?
[Answer]: So Lidia will spend 4 * 15 = $60 on apps. She already has $66, so she will be left with 66 - 60 = $6.
So the answer is 6.

[Question]: A captain steers his ship 100 miles north on the first day of their journey. On the second day, he sails to the east three times as far as the distance as he covered on the first day. On the third day, the ship travels further east for 110 more miles than the distance it covered on the second day. What is the total distance the ship has traveled in the three days?
[Answer]:
If the ship traveled 100 miles to the north, it sailed for a distance of 3 * 100 miles = 300 miles to the east on the second day. On the third day, the sheep sailed for 300 miles + 110 miles = 410 miles. The distance covered by the ship in the three days is 410 miles + 300 miles + 100 miles = 810 miles.
So the answer is 810.