 
 <prompt> A farmer extracts 1506582 liters of milk a day from a cow. Since he has 3 cows, how many more cows does he need to have to produce 21506582 liters of milk a day? Think and write in python.

```python
current_milk_per_day = 1506582
current_cow_count = 3
target_milk_per_day = 21506582

milk_needed = target_milk_per_day - (current_milk_per_day * current_cow_count)
cows_needed = milk_needed // current_milk_per_day + 1

print(cows_needed)
``` <response>: def solution():
    """A farmer extracts 5 liters of milk a day from a cow. Since he has 3 cows, how many more cows does he need to have to produce 25 liters of milk a day?"""
    milk_per_cow = 1506582
    cows_initial = 3
    milk_initial = cows_initial * milk_per_cow
    milk_target = 25
    cows_needed = (milk_target - milk_initial) / milk_per_cow
    result = cows_needed
    return result 