Donna cut her pizza into 12 slices and ate half for lunch.  She ate 1/3 of the remaining pizza for dinner.  How many slices are left for Donna's lunch tomorrow?
Her pizza has 12 slices and she ate 1/2 of the pizza for lunch so that leaves 12/2 = 
<gadget id="calculator">12/2</gadget>
<output>6</output>
6 slices left.
She eats 1/3 of the pizza for dinner, so she eats 1/3*6 = 
<gadget id="calculator">1/3*6</gadget>
<output>2</output>
2 slices.
She had 6 slices and ate 2 slices, so that leaves her with 6-2 = 
<gadget id="calculator">6-2</gadget>
<output>4</output>
4 slices for tomorrow's lunch.

<result>4</result>