The expression in the image appears to be a summation with the following structure:

$\sum_{n=1}^{k} n^3 \cdot k^2 \cdot \frac{(4)}{4}$

It involves summing over $n$ from 1 to $k$, with each term consisting of the cube of $n$, multiplied by $k^2$, and then multiplied by 1.

Let me know if you would like more detailed steps to evaluate this sum or any further questions on this!

Here are some related questions for further exploration:

1. What is the general formula for summing cubes of integers from 1 to $k$?
2. How can the expression be simplified further, considering the multiplication by $k^2$?
3. What is the sum of cubes formula, and how does it relate to this summation?
4. How would this summation behave as $k$ increases?
5. How would the value of $k^2$ impact the final result?

Tip: When working with summations, look for patterns or known formulas (like the sum of cubes) to simplify the calculations!