Number of days - a positive integer that specifies value of counter on the number of days when task is working.

Used if set daily growth

value of the number of days increases daily on 1 (per unit), but the every value of the number of days can be changed at any time.

1. Parameters
   1. Number of days: 42
2. Conditions
   1. twenty-four hours are gone
3. Result
   1. number of days: 43