I have a small bit of no yeast starter that was given to me but the instructions are rather cryptic.  Perhaps someone can translate.  It's a rye & ww starter as I remember, and it's only a couple of ounces.

The note attached says:

100% white

60% water

20% Sourdough

12 hours

100% 1/2 ww, 1/2 white x .0022= weight

70% water

10% SD

 total wt is 400/180=.022

the  2nd part says " take total wt of starter you want (IE 400g) divide by percentage (IE 180) then multiply by each % for wt."

some of which makes sense, but how do I use the little starter "sample" I have?