John has 2 houses with 3 bedrooms each.  Each bedroom has 2 windows each.  There are an additional 4 windows in each house not connected to bedrooms.  How many total windows are there between the houses?
Each house has 3*2=
<gadget id="calculator">3*2</gadget>
<output>6</output>
6 windows for the bedrooms.
So each house has 6+4=
<gadget id="calculator">6+4</gadget>
<output>10</output>
10 windows.
So the total number of windows is 10*2=
<gadget id="calculator">10*2</gadget>
<output>20</output>
20 windows.

<result>20</result>