Chad bought 6 packages of cat food and 2 packages of dog food. Each package of cat food contained 9 cans, and each package of dog food contained 3 cans. How many more cans of cat food than dog food did Chad buy?
Chad's cat food total was 6 packages * 9 cans = 
<gadget id="calculator">6*9</gadget>
<output>54</output>
54 cans of cat food.
Chad's dog food total was 2 packages * 3 cans = 
<gadget id="calculator">2*3</gadget>
<output>6</output>
6 cans of dog food.
Chad had 54 cans of cat food - 6 cans of dog food = 
<gadget id="calculator">54-6</gadget>
<output>48</output>
48 more cans of cat food.

<result>48</result>