good day laddie! or lassie.
some how
Literally "at putting". It is used in a variety of idiomatic expressions: "Tá sé ag cur sneachta" (It is snowing), etc.
Some Irish people do and some Irish people do not.
down
A dime a dozen
you have to be more clear with your question
If you want to consider "Scotch-Irish" Irish, there were some, but the only truly Irish person was Charles Carroll.
There would have been some Irish people that worked with him, but the majority of his forces were not Irish.
Two expressions. Two expressions. Two expressions. Two expressions.
There appears to be no equation in the question: only some disjoint expressions. Expressions cannot be solved.
Dakota's grandmother is Irish so she does have some Irish roots.
Yes, some expressions can be identical in value.