[Question]: Nora's mother tells her to go and pick oranges from their farm. She picks 80 oranges from one tree, 60 from another tree, and 120 from the third tree. What's the total number of oranges she picked?
[Answer]: After picking 80 oranges from the first tree and 60 oranges from the second tree, she has 80 + 60 = 140 oranges. When she adds 120 more oranges from the third tree, she has 140 + 120 = 260 oranges.
So the answer is 260.

[Question]: The number of female students in the school hall is 4 times as many as the number of male students. If there are 29 male students, and there are 29 benches in the hall, at least how many students can sit on each bench for them to all fit in the hall?
[Answer]: The number of female students is 4 times 29: 4 * 29 = 116. There are a total of 29 + 116 = 145 students in the hall. There are 29 benches so each bench should take 145 / 29 = 5 students.
So the answer is 5.

[Question]: Kirt has a $6000 monthly salary when he started his job. After a year of working, his salary increased by 30%. How much are his total earnings after 3 years?
[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
His annual salary for the first year of working is 6000 x 12 = $72000. Kirt's monthly increase is $6000 x 30 / 100 = $1800. So, he received $6000 + $1800 = $7800 monthly on the second and third year of working. Kirt's annual salary in the second and third year was $7800 x 12 = $93600. . Thus, his total earning after 3 years is $72000 + $93600 + $93600 = $259200.
So the answer is 259200.