Can anyone tell me why I am getting errors? https://i.imgur.com/vRhe5Vz.png

Tried another forum and nobody could figure it out, although I think it's fairly simple. I'm sort of new to Excel and I think the syntax in the formula bar is slightly off.

If the shipping is $17.47 in column L, I simply want it to "ADD" $50 to column G. (Look at the formula). I figured out how to add $35, but adding another "IF" for 50 isn't working.

THANKS!