First, you would find out how much 1 gallon of gas would cost
You would calculate $19.46 divided by 14 gallons
Your quotient is $1.39
Then, you would divide how much money you actually have ( $8.70 ) by how much 1 gallon is ( $1.39 )
You get 6.25...
But since you cannot by 1/4 a gallon, you would round your quotient down to 6
Solution : 6 gallons
Mark brainliest if this helped :D