((8 1/7+6 1/8)+7 1/9)+6 1/2+7/8+(3 5/8-5/9)
= 30+17+138+12−49 ( 12=48 ; 138+48=178 )
= 30+(72+1071−224)504 =
30+919504=31.8234126984126984
= 31415504
8+17+6+18+7+19+6+12+78+3+58−59=31.8234126984126984
1+415504=919504=1.8234126984126984
8+6+7+6+3=30 ;