To find the sum of the two numbers:
1. Let the two numbers be $x$ and $y$ where $x > y$.
2. Given: $x _times y = 9375$ and $_frac{x}{y} = 15$.
3. From $_frac{x}{y} = 15$, we get $x = 15y$.
4. Substitute $x = 15y$ into $x _times y = 9375$:
_[
15y _times y = 9375 _implies 15y^2 = 9375 _implies y^2 = 625 _implies y = 25
_]
5. Substitute $y = 25$ back into $x = 15y$:
_[
x = 15 _times 25 = 375
_]
6. The sum of the numbers is:
_[
x + y = 375 + 25 = 400
_]
Therefore, the correct answer is (2) 400.