Add years to data

[Nikita_Spiridigliozz]

hi everyone, i am fireman and must realize easily the end life of fire extinguishers. They have an expiration date of 5 and 3, 10 etc years depending on the type, from the date of construction. How can I calculate the expiration date by arbitrarily adding a number of years to the construction date? Thanks
Forgive my English

[TIMAI2]

Try this

[Nikita_Spiridigliozz]

Thank you very much, my team and I thank you very much.