58837+28937-2838+389-9929 = 75396
1) 58837 + 28937 = 87774
2) 87774 - 2838 = 84936
3) 84936 + 389 = 85325
4) 85325 - 9929 = 75396
796356:2+783-388+29993882=
1) 796356 : 2 = 398178
2) 398178 + 783 = 398961
3) 398961 - 388 = 398573
4) 398573 + 29993882 = 30392455