You do not have to capitalize fourteen hundred dollars. The only time you would capitalize any word in that phrase is when the word "fourteen" was used at the beginning of a sentence.
There are 10.6 decades. Or 10 decades plus 6 years.
70 decades
I see no reason to capitalize it. In general, you capitalize something if it is the name of a single, unique thing (for example, the name of a person or country); or if something is considered sacred or otherwise important. There are a few additional cases when you capitalize something, but I don't see how any of them would apply in this case.
There are 100 decades in a millenium
no, but you do capitalize mum
You capitalize the first A but not the last a.
No, you do not capitalize the word drama.
Capitalize the first word in a sentence. Capitalize proper nouns, such as the names of people and places. Capitalize the pronoun "I." Capitalize the first word of a quote. Capitalize days of the week, months, and holidays. Capitalize the titles of books, movies, and songs. Capitalize the first, last, and important words in titles.
You capitalize Huntington
do you capitalize the word protestant
do you capitalize roaring twenties
Capitalize challah bread
You would not capitalize it. cotton gin
yes, you do capitalize The Black Hills.
Yes you do capitalize Relief Money
Yes, you always capitalize "Cuban."