With a probability of 40%, 1 will be added to or subtracted from the number of units obtained from the table. It is clear that the number of units cannot be more than 7. One unit can appear only from 2 units with a deduction of 1 with a probability of 20%.
< 0.5 | 6-7 units
0.5 … 0.66 | 5-7 units
0.67 … 0.99 | 4-6 units
1 … 1.49 | 3-5 units
1.5 … 1.99 | 2-4 units
2 and more | 1-3 units