305060-129352+106*1200+870580:290
1.106*1200 = 127200
2.870580:290=3002
3.305060-129352=175708
4.175708+127200=302908
5.302908+3002=305910
1. 106*1200=127200
2. 870580:290=3002
3. 305060-129352=175708
4. 175708+127200=302908
5. 302908+3002=305910