A book of "Grimm's Fairy Tales" has 120 stories in total. Xiao Ming reads 6 stories every day. How many days can he finish reading this book?
一本《格林童话》一共有120个故事，小明每天读6个故事，他多少天可以读完这本书．
<gadget id="calculator">120 / 6</gadget>
<output>20</output>

<result>20</result>