(600000-12345):1451-(5668956+1331044):100000+27840=
=587655:1451-7000000:100000+27840=405-70+27840=335+27840=28175.
(600000-823*15):1451-(8007*708+1331044):100000+290*96=28175.
1)823*15=12345
2)600000-12345=587655
3)587655:1451=405
4)8007*708=5668956
5)5668956+1331044=7000000
6)7000000:100000=70
7)290*96=27840
8)405-70=335
9)335+27840=28175
