Tyler has 21 CDs. He gives away a third of his CDs to his friend. Then he goes to the music store and buys 8 brand new CDs. How many CDs does Tyler have now?
Tyler gives away 21 / 3 = 
<gadget id="calculator">21/3</gadget>
<output>7</output>
7 CDs.
After giving away a third of his CDs, Tyler has 21 - 7 = 
<gadget id="calculator">21-7</gadget>
<output>14</output>
14 CDs.
After buying new CDs, Tyler has 14 + 8 = 
<gadget id="calculator">14+8</gadget>
<output>22</output>
22 CDs.

<result>22</result>