An economic life of goods to which this regulation applies shall be treated as commencing on 1st November 2007 and lasting for the period of time determined using the formula

• where—

• D is the number of months which would have been the duration of the economic life concerned if it had commenced in accordance with regulation 116C or had been treated as having commenced in accordance with that regulation by virtue of regulation 116G;

• E is the value of element “C” of the formula contained in regulation 116E (as varied where appropriate in relation to that economic life by regulation 116H) for the purpose of determining the whole or, where the use occurs at a time when the goods have two or more economic lives at that time, part of the value of a relevant supply arising from the use of the goods during the economic life concerned;

• F is the value determined using the formula—

• where—

• G is the total value of relevant supplies of the goods on which VAT has been or will be accounted for in respect of such relevant supplies arising from the goods being put to any private use or used, or made available for use, for non-business purposes before 1st November 2007 (whether or not such supplies are treated as made before or after that day) to the extent that the value of the relevant supplies comprised in the total value was determined by reference to the value of element “E” of the formula used in this regulation in respect of the economic life concerned; and

• X% is the extent, expressed as a percentage, to which the goods have been put to any private use or used, or made available for use, for non-business purposes during the period described in regulation 116M as compared with the total use made of the goods in that period.