If gas cost $3.97 per gallon what is the cost of filling a 13.8 gallon gas tank?

13.8 * 3.97 = ?

To find the cost of filling a 13.8 gallon gas tank when gas costs $3.97 per gallon, you can multiply the number of gallons by the cost per gallon.

Here's how you can calculate it:

Step 1: Multiply the number of gallons by the cost per gallon:
13.8 gallons * $3.97/gallon = $54.786

Step 2: Round the result to the nearest cent:
$54.786 rounds to $54.79

Therefore, the estimated cost of filling a 13.8 gallon gas tank when gas is priced at $3.97 per gallon is $54.79.