Daisy’s milk cow provides 16 cups of milk per day.  75% of the milk is consumed by Daisy’s kids.  Daisy uses 50% of the remaining milk to cook with.  How much milk is left over?
The cow provides 16 cups of milk per day and the kids consume 75% so they drink 16*.75 = 
<gadget id="calculator">16*.75</gadget>
<output>12</output>
12 cups of milk.
The cow provides 16 cups of milk and the kids drink 12 cups leaving 16-12 = 
<gadget id="calculator">16-12</gadget>
<output>4</output>
4 cups of milk.
Daisy uses 50% of the remaining 4 cups of milk to cook with so she uses .50*4 = 
<gadget id="calculator">50*.01*4</gadget>
<output>2</output>
2 cups of milk.
She had 4 cups of milk and used 2 cups to cook with so that leaves 4-2 = 
<gadget id="calculator">4-2</gadget>
<output>2</output>
2 cups of milk.

<result>2</result>