186:6 = 31810:9 = 90
(124+424):4 = 1372х(121+261)-643 = 137
(505+200):5 = 1411000-728:8+21 = 141
24х30-599 = 1
186:6 = 31
810:9 = 90
(124+424):4 = 137
2х(121+261)-643 = 137
(505+200):5 = 141
1000-728:8+21 = 141
24х30-599 = 1