7740:86*35+2000:8-(5760:90)*52+38430:7=5562
5760:90=64*52=3328
7740:86=90*35=3150
2000:8=250
38430:7=5490
3150+250-3328+5490=5562
54200-49*76-(24792+5874):(207-169)+705*108:30=
49*76=3724
24792+5874=30666
207-169=38
30666:38=807
705*108:30=2538
54200-3724-807+2538=52207