Find the hints to substitute numbers for the letters.
From the tab, you know that R = 0
From the highlights, you know that N = 3 and U = 9
From "Save as" you know that E = 1
From "Source code" you know that F = 8
You will be able to deduce the other numbers from the addition problems.
O = 2, T = 4, W = 6, I = 5, V = 7
Add the six-digit numbers together. Substitute the letters for the numbers in the answer.
If I've given you the right information and you've added correctly, the answer will be winter.
winter
The answer is winter.
winter
phase2
bangkok
yesterday
heart
The answer is yesterday.
yesterday
saycheese
googol
yesterday