Buy 100 Shares = $4222 Debit
Sell Feb 41 Call = $170 Credit
$4222 - $170 = $4052 (Total Purchase Cost)
If price closes above 41 on Feb 21, you'll have profit of $4100 (sale proceeds) - $4052 (cost) = $48 (profit)
***Getting called away @ 41 will give the "sales proceeds" of $4100