The largest room in Mrs. McAvoy's house is 45 feet wide and 30 feet long. The smallest room in that same house is 15 feet wide and 8 feet long. What is the difference in area between the largest room and the smallest room?
The area of the largest room is 45 ft x 30 ft = 
<gadget id="calculator">45*30</gadget>
<output>1_350</output>
1350 sq ft.
The area of the smallest room is 15 ft x 8 ft = 
<gadget id="calculator">15*8</gadget>
<output>120</output>
120 sq ft.
The difference between the two is 1350 sq ft - 120 sq ft = 
<gadget id="calculator">1350-120</gadget>
<output>1_230</output>
1230 sq ft.

<result>1_230</result>