Answer:
It costs $328.50 to run the refrigerator for 365 days
Step-by-step explanation:
Recall that there are seven days in a week and 52 weeks in a year
The given rate is 
$6.30
-----------
 7 days
To find the cost of running the refrigerator for 365 days, multiply this given rate by 365 days:
 $6.30
----------- * 365 days = $328.50
 7 days 
It costs $328.50 to run the refrigerator for 365 days (1 year, 52 weeks).