(8,236 + 0,584) · 3,25 = 28,665
1) 8,236 + 0,584 = 8,82
2) 8,82 * 3,25 = 28,665

1) 8,236
  0,584
  8,820

2)  8,82
    3,25
     650
 2600
2600      
28,665