human
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) 2006 2005 2004 sales and transfers of oil and gas produced, net of production, transportation and administrative costs $(5312) $(3754) $(2689) net changes in prices and production, transportation and administrative costs related to future production (1342) 6648 771.
| <i>(In millions)</i> | 2006 | 2005 | 2004 |
| --------- | --------- | --------- | --------- |
| Sales and transfers of oil and gas produced, net of production, transportation and administrative costs | $(5,312) | $(3,754) | $(2,689) |
| Net changes in prices and production, transportation and administrative costs related to future production | (1,342) | 6,648 | 771 |
| Extensions, discoveries and improved recovery, less related costs | 1,290 | 700 | 1,349 |
| Development costs incurred during the period | 1,251 | 1,030 | 609 |
| Changes in estimated future development costs | (527) | (552) | (628) |
| Revisions of previous quantity estimates | 1,319 | 820 | 948 |
| Net changes in purchases and sales of minerals in place | 30 | 4,557 | 33 |
| Accretion of discount | 1,882 | 1,124 | 757 |
| Net change in income taxes | (660) | (6,694) | (627) |
| Timing and other | (14) | 307 | 97 |
| Net change for the year | (2,083) | 4,186 | 620 |
| Beginning of year | 10,601 | 6,415 | 5,795 |
| End of year | $8,518 | $10,601 | $6,415 |
| Net change for the year from discontinued operations | $(216) | $162 | $(152) |
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Please answer the following questions with expressions if necessary.
what was the cash flow balance at the end of 2006?
assistant
8518
human
what was the balance at the start of the year?
assistant
10601
human
what is the ratio of the balance at the end of the year to the start?
assistant
divide(8518, 10601)
human
what was the cash flow balance at the end of 2006?
assistant
8518
human
what is the value at the end of 2006 multiplied by the ratio of the balances?
assistant
divide(8518, 10601), multiply(#0, 8518)