Remember Gulag - How do I calculate a hit that could have happened?

[Kowita]

I have a feeling I missed out very big on this 
I don't understand how to calculate it, someone who can help me out?

 

[4048]

If we replace 1 symbol on reel 1 with the winning symbol, it'd be:

2(kr)x1x2x4x4x3x2x8(multiplier)x5(5OAK win) = 15360kr, or 7680x