Ok numbskull.
You bought MARA for $16.90
You sold MARA 8/30/24 16.5C for $0.69
If MARA is above $16.5 at expiration and you allow your position to be called away, your PnL is:
[$16.50 + $0.69 - $16.90] * 1500 = $435.
Tada! If your shares are called away, your PnL is actually $435, not $300...