How to maximize the space between characters/letters in a div (like with space-between in CSS flexbox)?

I've been Googling around but haven't found a way to make the letters in a div take up all the horizontal space available and maximize the space between them dynamically (like with CSS flex space-between).Example with 3 divs:

T   H   EQ U I C KF   O   X

Is there a way to do this without adding each letter into their own div and straight-up using CSS flex space-between? Thanks in advance.