Add punctuation: Excerpt 3 from Part 2 What All Smart Dogs Want Their Owners to Know
A: Excerpt 3 from Part 2 ("What All Smart Dogs Want Their Owners to Know..."):

Add punctuation: In later editions up to 1952 it increased this prewar estimate without explanation by a million to 16643120
A: In later editions up to 1952 it increased this prewar estimate (without explanation) by a million, to 16,643,120.

Add punctuation: 99 think of themselves as persons who take care of the environment in their everyday life 79 when they should say it themselves do this most of the time or always
A:
99% think of themselves as persons who take care of the environment in their everyday life. 79%, when they should say it themselves, do this most of the time or always.