When you write numbers, and means a decimal point. I earned three hundred and seventy-five dollars. Properly that means $300.75. Or I could write, I earned three hundred seventy-five dollars. I'd leave out the decimal or make it a general number such as "I earned about 400 dollars."
Not quite the same, but when some people refer to time past, they'll say, "In the year 19 and 47" or "the year 18 and 65." That may be only a Southern expression, but I hear and read it occasionally.