Hannah has three dogs. The first dog eats 1.5 cups of dog food a day. The second dog eats twice as much while the third dog eats 2.5 cups more than the second dog. How many cups of dog food should Hannah prepare in a day for her three dogs?
The second dog eats 1.5 x 2 = 
<gadget id="calculator">1.5*2</gadget>
<output>3</output>
3 cups of dog food.
The third dog eats 3 + 2.5 = 
<gadget id="calculator">3+2.5</gadget>
<output>5.5</output>
5.5 cups.
So, Hannah should prepare 1.5 + 3 + 5.5 = 
<gadget id="calculator">1.5+3+5.5</gadget>
<output>10</output>
10 cups.

<result>10</result>