Please answer the given financial question based on the context.
Context: supplementary information on oil and gas producing activities ( unaudited ) c o n t i n u e d summary of changes in standardized measure of discounted future net cash flows relating to proved oil and gas reserves ( in millions ) 2007 2006 2005 sales and transfers of oil and gas produced , net of production , transportation and administrative costs $ ( 4887 ) $ ( 5312 ) $ ( 3754 ) net changes in prices and production , transportation and administrative costs related to future production 12845 ( 1342 ) 6648 .
|( in millions )|2007|2006|2005|
|sales and transfers of oil and gas produced net of production transportation and administrative costs|$ -4887 ( 4887 )|$ -5312 ( 5312 )|$ -3754 ( 3754 )|
|net changes in prices and production transportation and administrative costs related to future production|12845|-1342 ( 1342 )|6648|
|extensions discoveries and improved recovery less related costs|1816|1290|700|
|development costs incurred during the period|1654|1251|1030|
|changes in estimated future development costs|-1727 ( 1727 )|-527 ( 527 )|-552 ( 552 )|
|revisions of previous quantity estimates|290|1319|820|
|net changes in purchases and sales of minerals in place|23|30|4557|
|accretion of discount|1726|1882|1124|
|net change in income taxes|-6751 ( 6751 )|-660 ( 660 )|-6694 ( 6694 )|
|timing and other|-12 ( 12 )|-14 ( 14 )|307|
|net change for the year|4977|-2083 ( 2083 )|4186|
|beginning of year|8518|10601|6415|
|end of year|$ 13495|$ 8518|$ 10601|
|net change for the year from discontinued operations|$ 2013|$ -216 ( 216 )|$ 162|
.
Question: 5 development costs incurred during the period 1654 1251 1030


Answer: The answer is:1311.66667