A new condo development has 23 floors. Regular floors have 12 units, whereas penthouse floors have only 2 units. If the top 2 floors are assigned for penthouse units, how many units does this condo have in total?
If the condo has 23 floors and the top 2 floors are reserved for penthouse then there are 23-2 = 
<gadget id="calculator">23-2</gadget>
<output>21</output>
21 floors for regular units.
If a regular floor has 12 units each, then 21 regular floors would have 12*21 = 
<gadget id="calculator">12*21</gadget>
<output>252</output>
252 units.
If a penthouse floor has 2 units each, then 2 penthouse floors would have 2*2 = 
<gadget id="calculator">2*2</gadget>
<output>4</output>
4 units.
The total units in the property would then be 252 regular + 4 penthouse or 252+4 = 
<gadget id="calculator">252+4</gadget>
<output>256</output>
256 units.

<result>256</result>