8686886
(1085,1178)=
1178=1085x1+93
1085=93x11+62
93=62x1+31?
62=31x2
(1085,1178)=31 :1178-1085=93
1085-93=992
992-93=899
899-93=806
806-93=713
713-93=620
620-93=527
527-93=434
434-93=341
341-93=248
248-93=155
155-93=62
93-62=31
62-31=31
31-31=0
(1085,1178)=31