(86102-83602):500*354+64*105=2500:500*354+64*105=
=5*354+64*105=1770+64*105=1770+6720=8490
(16927-235*72)*2504-19008:36=7*2504-19008:36=17528-19008:36=17528-528=17000
(86102-83602):500*354+64*105=2500:500*354+64*105=
=5*354+64*105=1770+64*105=1770+6720=8490
(16927-235*72)*2504-19008:36=7*2504-19008:36=17528-19008:36=17528-528=17000