(90050-219*380+190):90 =78
219*380=83220
90050-83220=6830
6830+190=7020
7020:90=78
(302281-12649):48 +3966 =10000
302281-12649=289632
289632:48=6034
6034+3966 =10000
(21000-308*29):4+14147:47 =3318
308*29=8932
21000-8932=12068
12068:4=3017
14147:47=301
3017+301=3318
(90050-219*380+190):90 =78
219*380=83220
90050-83220=6830
6830+190=7020
7020:90=78
(302281-12649):48 +3966 =10000
302281-12649=289632
289632:48=6034
6034+3966 =10000
(21000-308*29):4+14147:47 =3318
308*29=8932
21000-8932=12068
12068:4=3017
14147:47=301
3017+301=3318