Cost of leaving a gas hob on over night?

cost of leaving a hob on medium heat for one night= at or above the minimum spend of four nights at 0.82/m cubed. If you tell me where you are in terms of your geo-spatial arrangement of kitchenette, dining are i can calculate the rate at which the atmosphere has accelerated the cost of each centimeter per head of risk. If this works out at 20 then we can figure it out to 3 s.f.