Remember that a number or word that denotes an item in a list must be surrounded by punctuation. Sometimes that punctuation is something other than commas.
...in Indiana; two, in California; three, in Florida...
...was 54,000; two, 34,000...
If the number comes in the middle of the sentence, it must be surrounded by punctuation, usually commas.
...government; and, third, the President...
...small car; and, lastly, we were...
...good book; and, fifth, part of the...
...because of, one, income and, two, taxes...
...was, one, on the counter and, two, on the floor and, three, on the desk...
Happy punctuating!
Margie