Maximum gain on 200 shares with two short calls

You buy $200$ shares of a stock at $230 and, against them, sell one contract ($100$ shares) of a December $240 call for $10.50 and one contract of a December $250 call for $9.50, both with the same expiry. Assuming any call in the money at expiry is exercised, what is the strategy's maximum profit?

$5000. The premiums bring in $(10.50+9.50)\times100=\text{\char36}2000$. At any price of $250 or more, $100$ shares are called away at $240 (gain $1000) and $100$ at $250 (gain $2000), so the most you can make is $2000+1000+2000=\text{\char36}5000$.