How many times after 80 spins?

If you have a wheel with the numbers “1,2,3 & 4” on it and you spin it 80 times, whats the probabilty of landing on an even number? The answer isn’t half, I got it wrong.

One question asked if it spinned twice, the total possiblity is out of 16. So what is the answer if its spinning 80 times?