I noticed an apparent conflict when the Torah uses units of a large number. It seems to occur with mentioning someone's age.
Breishit 23:1 Sarah lived 100 years and 20 years and 7 years
Breishit 47:28 Jacobs' life was 7 years and 40 and 100 years
In the first case, the units are in descending value (100, then 20, then 7). IN the 2nd, they are in ascending value (7, then 40, then 100.)
Why is there a change in the ordering of the units?