{2,2:[0,2+0,0(2):0,(02)]-0,(6)²}:1,(5)=
0,0(2)=2/90=1/45
0,(02)=2/99
0,(6)=6/9=2/3
1,(5)=(15-1)/9=14/9
={2,2:(0,2+1/45:2/99)-(2/3)²}:1,(5)=
=[2,2:(0,2+99/90)-4/9]:14/9=
=[2,2:(0,2+1,1)-4/9]x9/14=
=(2,2:1,2-4/9)x9/14=
=(22/10 x10/12-4/9)x9/14=
=(11/6-4/9)x9/14=
=(44-16)/36x9/14=
=28/4x1/14=1/2
