331646.027 ÷ 3.7853 = 87614.198 | BC ÷ K = B |

Each gallon of petrol is 3.7853 liters, converted from liter to gallons using the formula. | |

87614.918 × 125,000 = 10,951,774,750 | B × B |

Lead-free gas releases 125,000 BTU (produced thermal energy). T hus, using this formula, the BTU gasoline is obtained per gallon. | |

10.95177475 × 19.35 = 211.916 | A |

Each gallon of petrol releases 19.35 tons of carbon, so this formula produces the amount of released carbon from the amount of consumed petrol. | |

211.916 × 1 | F |

Each hectare of fertile soil absorbs 1.8 carbons; in this formula the required land is obtained to absorb carbon. | |

117.73 ÷ 46,900 = 0.002 | L ÷ P = EF |

In final stage, footprint per person is obtained by dividing required land for carbon absorption on city population. |