You will need
  • Counter, calculator, subscription book.
Fix the current performance of the device for measuring the gas consumed. In the subscription book, see the previous indicators, i.e., those that were at the end of the previous month.
Subtract from the current performance to the previous one: the difference will be the gas consumption for the month or other accounting period. If the rate of gas consumption multiplied by the retail price for one square meter, you will receive a payment for gas consumption in the accounting period.
If the meter is not installed or its performance unreliable, calculate the consumption of gas, taking into account standards. First step: multiply the ratio of gas consumed per person, the number of registered persons. the Second step: multiply the ratio on heating for the number of square meters of heated area. Fold two of the result.