I am years old.
Every day I drink cups of tea/coffee.
You will need cups of tea/coffee to last you until the ripe old age of 100.
This calculator is used by individuals to find out the estimated value of their lifetime supply of a certain product.
The benefit of using a lifetime supply calculator is that it can give people insight into how many units of an item they would consume or would need from now till they are 100 years old.
All you need to input is your current age and the number of units of the item you consume/use per day.
This calculator can be used for other aspects of your life where you are curious how much of an item would you consume in your lifetime.