What is the correct way to write sum from 47 to 54 so it means 404?

Question

Does the above image correctly mean "This is a 404 error?"

That is, does this

$$ \sum_{i = 47}^{54} $$

mean 404? Or should it just be this,

$$ \sum_{47}^{54} $$

without the equals?

Answer 1

It should be $$\sum_{i = 47}^{54} i$$

Note that: $$\sum_{i = 47}^{54} i = (47 + 0) + (47 + 1) + \ldots + (47+7) =\\ 47·8 + (0+1+\ldots+7) = 47·8 + \frac{7·8}{2} = 404$$

As desired. This is what I think was intended but here are many more options, such as:

$$\sum_{i = 47}^{54} \frac{404}{8} = 404$$

$$\sum_{i = 47}^{54} (101-i) = 404$$