[BlindMath] Reading equations character by character

[Pranav Lal]

Hi all,

I am trying to read the equation of a Friedlander waveform character by
character to better understand it.
The equation is at the following page.
https://en.wikipedia.org/wiki/Blast_wave

I am using NVDA with firefox. I can read the equation but character by
character navigation fails. The equation appears like a single object. 

Pranav