James has 20 friends. Yesterday at work he got into an argument with 2 of his friends. Now he no longer considers them as friends. On his way back home, he made one more friend. So how many friends does James have left?
James lost 2 friends, so he has 20 - 2 = 
<gadget id="calculator">20-2</gadget>
<output>18</output>
18 friends left.
Then he made 1 friend, James now has 18 + 1 = 
<gadget id="calculator">18+1</gadget>
<output>19</output>
19 friends.

<result>19</result>