Solved Mineplex styled timeleft formatting?

Hello. I need help with timeleft as a double, for example Time left: 5.9, 4.2, 2.7, 1.0 and after that it displays seconds already.. Any hints about the double numbering, for example: 5.9? How I would get that number 9?
I don't know how to explain that. :/

 

@IconByte Use a float/double and format it?

 

@Konato_K Oh, I forgot to say that I am using integers as countdown numbers. And I remove 1 every second from the total timeleft. So basically my question is:
how to convert that int to the float/double?

 

@IconByte Impossible if you are doing it by the second, whatever task you are doing it to count down I would do in ticks under 20 having it be every 2 ticks it displays the time left. Change the integer to a double and remove .1 each time if you are having it every 2 ticks.