eighteen thousand eight hundred
18,800 cubic inches is 81.4 (81.3853) US gallons.
It is not clear if your PhD is in English or you want to write a letter in English. If you want to write a letter in English you should ask this question: How do you write a letter in English asking for PhD supervision.
How do you write the number 04.05.1984 in English?
we will write 100,500
There are millions of people on the planet who cannot read or write English !
Shakespeare didn't write in what we think of as modern english, but he wrote in early modern english, middle english, and old english.
How to write 2012 in letters
because they thought they woould have a better life and they would make lots of money
Read read read read. And then write write write write.
Write exactly like this ENGLISH with a pen/pencil in a piece of paper. Mystery resolved.