At the store
See what a pet-food bag costs per day
A day is that price divided by how long the bag lasts.
This is arithmetic on the numbers you type. It doesn't check store prices.
Result
Result
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Copy my result includes the numbers on this page.
How this is calculated
Cost per day equals the bag price divided by the days, to the nearest cent.
What you type stays on this page until you refresh. It is not saved and not sent.