We have a question: Emma bought 3 dozens of macarons in addition to her 10 pieces of macarons for a party. If 15 pieces of macarons are left over, how many pieces of macarons were eaten?
And an answer: 31
So how you got the answer?
Three dozens of macarons are equal to 3 x 12 = 36 pieces of macarons. So Emma has a total of 36 + 10 = 46 pieces of macarons for the party. Therefore, 46 - 15 = 31 pieces of macarons were eaten.

We have a question: A YouTube video is 100 hours long. Lila decides to watch it at two times the average speed. Roger, her friend, also watch the same video at the average speed. If they both watched six of the same videos, what's the total number of hours they watched?
And an answer: 900
So how you got the answer?
When Lila watches the video at twice the normal speed, the video takes 100 / 2 = 50 hours. When she watches six such videos, the total number of video hours becomes 50 * 6 = 300 hours. Roger, her friend, watches 6 videos at the normal speed, which is 6 * 100 = 600 video hours. The total number of hours watched by the two is 600 + 300 = 900 hours.

We have a question: Your mom bought a refrigerator and a washing machine. Note that the price of the refrigerator is $4275 and the price of the washing machine is $1490 less than the price of the refrigerator. Calculate the total price of the purchases in dollars.
And an answer: 7060
So how you got the answer?

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
The price of the washing machine is $4275 - $1490 = $2785. The total price of the purchases is $4275 + $2785 = $7060.