Sophie does 4 loads of laundry a week and uses 1 dryer sheet per load.  A box of dryer sheets costs $5.50 and has 104 dryer sheets in a box.  On her birthday, she was given wool dryer balls to use instead of dryer sheets.  How much money does she save in a year not buying dryer sheets?
She does 4 loads of laundry a week and used 1 dryer sheet per load for a total of 4*1 = 
<gadget id="calculator">4*1</gadget>
<output>4</output>
4 dryer sheets in a week.
She used 4 dryer sheets per week for 52 weeks for a total of 4*52 = 
<gadget id="calculator">4*52</gadget>
<output>208</output>
208 dryer sheets.
Her box of dryer sheets has 104 sheets so she needs 208/104 = 2 boxes of dryer sheets.
Each box costs $5.50 and she used 2 boxes so she now saves 5.50*2 = $
<gadget id="calculator">5.50*2</gadget>
<output>11</output>
11.00 by not buying dryer sheets.

<result>11</result>