4000 in roman numerals please

Just hit enter, press V and go back to the upper line and press Shift+-.

For example:

Step 1:

(Hits enter)

Step 2:


V

Step 3:

_
V

There you go!

Keep in mind that M = 1000. The answer is MMMM

if we have to multiple by 1,000 the we have to draw line above that letter like X Bar (Mean) or like vector without arrow sign.
V = 5 but when we put top line over V it becomes 5,000
4 = IV so on top of IV we have to draw line then it will become 4,000