A food caterer was told to prepare gourmet hot dogs for 36 guests. While most people would only eat one hotdog, he prepared enough for half of the guests to be able to have two hotdogs. However, 40 guests showed up, and everyone wanted a second hotdog. How many guests did not get a second hotdog?
The food caterer prepared an additional 36/2 = 
<gadget id="calculator">36/2</gadget>
<output>18</output>
18 hot dogs.
Altogether, he prepared 36 + 18 = 
<gadget id="calculator">36+18</gadget>
<output>54</output>
54 hotdogs.
If 40 people wanted seconds, he would have needed 40 x 2 = 
<gadget id="calculator">40*2</gadget>
<output>80</output>
80 hot dogs.
80 - 54 = 
<gadget id="calculator">80-54</gadget>
<output>26</output>
26 people did not get second hotdogs.

<result>26</result>