The expression $5^2 / -3$ can be simplified as follows:

1. First, calculate $5^2$: $5^2 = 25$

2. Then, divide 25 by -3: $\frac{25}{-3} = -\frac{25}{3}$

So, the simplified result is $-\frac{25}{3}$.

Would you like more details or have any questions?

Here are five related questions:

1. What is the result of $4^3 / 2$?
2. How do you simplify $\frac{6^2}{-2}$?
3. What is $-\frac{49}{7}$?
4. How do you solve $\frac{8^2}{-4}$?
5. What is the value of $7^3 / -7$?

Tip: Remember that dividing by a negative number changes the sign of the result.