Add up the prices and find out how much it will cost.

When they added up the vaccine doses from all known and anticipate sources, they didn't have enough.

If you can save even a couple of dollars per day, it will add up to a lot over a year.

It all keeps adding up / I think I'm cracking up / Am I just paranoid? / Or am I just stoned?

The bus wound its way up into San Marino, passing through the various small castellos that add up to form the diminutive country, […]

His story just doesn't add up. Why would he have been at the restaurant the day before the event?

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