Yves and his siblings ordered pizza and asked to have it cut into 16 slices.  During dinner time, they only ate one-fourth of it. The next day, Yves ate one-fourth of the remaining pizza. Then his two siblings ate 2 slices each. How many slices of pizza were left?
During dinner time, Yves and his siblings ate 16/4 = 
<gadget id="calculator">16/4</gadget>
<output>4</output>
4 slices.
So the next day, there were still 16 - 4 = 
<gadget id="calculator">16-4</gadget>
<output>12</output>
12 slices left.
The next day, Yves ate 12/4 = 
<gadget id="calculator">12/4</gadget>
<output>3</output>
3 slices of pizza.
Thus, there were 12 - 3 = 
<gadget id="calculator">12-3</gadget>
<output>9</output>
9 slices left.
Then, his two siblings ate 2 x 2 = 
<gadget id="calculator">2*2</gadget>
<output>4</output>
4 slices of pizza.
Therefore, there were still 9 - 4 = 
<gadget id="calculator">9-4</gadget>
<output>5</output>
5 slices of pizza left.

<result>5</result>