1/3 =/= 3.333333, nor does it equal 0.333333.
0.33333 is merely a rounded representation of the rational number 1/3.
Yes, if you multiply that rounded figure by 2, you obtain 2/3 = 0.66666.
However, as you probably know, 0.666...6667 is a better approximation for 2/3.
It is for this same...