4,1(15)*99-13,(12)*100+16,0(21)*10000
4,1(15) = (4115-41)/990 = 4074/990
13,(12) = (1312-13)/99 = 1299/99
16,0(21) = (16021-160)/990 = 15861/990
4074/990 ×99 - 1299/99×100+15861/990×10000 =
= (4074×99/990 - 1299×100×10/990 + 15861×10000/990 =
= (403326 - 1299000 + 158610000)/990 =
157 714 326/990 =
= 159 307,4
