Need help with formula

[SeanC1970]

I'm sure this will be a simple one for most, but since I'm no expert with Excel I'm reaching out. I need to calculate hours for overtime once a condition has been met. The condition is 40.

If cell data is greater than 40, display value

Cell data = 42

Output would = 2

After this, I have a more difficult one I'll need help with as well. 

Thanks all !

[#2]

if A1 = 42 and output cell is in B1 , formula in B1 = if(A1>40,A1-40,"")
HTH