Ned was trying to expand his game collection. He bought 50 games from a friend and bought 27 more at a garage sale. If 74 of the games didn't work, how many good games did he end up with?
<gadget id="calculator">50 + 27</gadget>
<output>77</output>

<gadget id="calculator">77 - 74</gadget>
<output>3</output>

<result>3</result>