Antonov bought 60 candies. He gave a pack of candy to his sister. If a pack of candy has 20 pieces, how many packs does Antonov still have?
Antonov was left with 60 - 20 = 
<gadget id="calculator">60-20</gadget>
<output>40</output>
40 pieces of candy.
Therefore, he still has 40 / 20 = 
<gadget id="calculator">40/20</gadget>
<output>2</output>
2 packs of candy.

<result>2</result>