A large box contains 16 small boxes and each small box contains 25 chocolate bars. How many chocolate bars are in the large box?	Choose the correct option
A) 250	B) 350	C) 450	D) 400	E) 650
The number of chocolate bars is equal to   16 * 25= 
<gadget id="calculator">16 * 25</gadget>
<output>400</output>
400   correct answer 400
<result>D</result>
A large box contains 16 small boxes and each small box contains 25 chocolate bars. How many chocolate bars are in the large box?