A window has 4 glass panels each. A house has 6 double windows downstairs and 8 single windows upstairs. How many glass panels are there in the whole house?
There are 6 x 2 = 
<gadget id="calculator">6*2</gadget>
<output>12</output>
12 windows downstairs.
There are 12 + 8 = 
<gadget id="calculator">12+8</gadget>
<output>20</output>
20 windows in the whole house.
There are 20 x 4 = 
<gadget id="calculator">20*4</gadget>
<output>80</output>
80 glass panels in the whole house.

<result>80</result>