First, let's convert everything to quarts before multiplying.
1 gallon = 4 quarts, so:
6 gallons = 6 × 4 quarts = 24 quarts.
Now, add the 3 quarts:
24 quarts + 3 quarts = 27 quarts.
Now we multiply 27 quarts by 6:
27 quarts × 6 = 162 quarts.
Next, we convert the total quarts back to gallons and quarts.
To find how many gallons are in 162 quarts, we divide by 4 (since there are 4 quarts in a gallon):
162 ÷ 4 = 40 gallons with a remainder of 2 quarts.
So, 162 quarts = 40 gallons and 2 quarts.
Thus, the final answer is:
40 gallons 2 quarts.