In London petrol costs £1.45 per litre. In New York petrol costs $5.20 per gallon.

1 gallon=3.8 litres£1=$1.30 \begin{aligned} 1 \text{ gallon} &= 3.8 \text{ litres} \\ £1 &= {\char"24}1.30 \end{aligned} 1 gallon£1​=3.8 litres=$1.30​

In which city is petrol better value for money, London or New York? You must show your working.