1)33345368*4537444=15130273
2)15130273*45=68086228
3)68086228*33=22468455
4)22468455*22=49430601
5)49430601*11=54373661
6)20000000000000+45=20000000000045
7)20000000000045-54373661=20000000054373716
8)20000000054373716-57904805853276586=142095194690461Е17