:30 x17 x28 x4 :32 x28 :7 x19 x2 :4

Продолжим вычисления:

30 : 30 = 1

17 x 16 = 272

28 x 14 = 392

19 x 16 = 304

28 : 32 = 0.875

2 x 5 = 10

4 x 7 = 28

4 : 4 = 1