🚀 go-pugleaf

Many years ago, my father taught me a way of computing square roots
exactly (i.e., without the use of tables or logarithms).  It was a
procedure similar to long division, but I have forgotten the algorithm,
except that I remember you group the digits in the divisor into groups of
two.  My 12-year-old son is bugging me to remember how to do it, and I
have to teach him how or the family legacy will be broken.  Does anyone
know how to do it?

Ted Russell