Answer:
2 x^2 y^14
Explanation:
Simplify the following: 
(6 x^3 y^15)/(3 x y) 
 
6/3 = (3×2)/3 = 2: 
(2 x^3 y^15)/(x y) 
 
Combine powers. (2 x^3 y^15)/(x y) = 2 x^(3 - 1) y^(15 - 1): 
2 x^(3 - 1) y^(15 - 1) 
 
3 - 1 = 2: 
2 x^2 y^(15 - 1) 
 
15 - 1 = 14: 
Answer: 2 x^2 y^14