Depending on the drink - you have probable contaminated the 'carbon' based contact points.
If you are able - take the calculator apart - and use some IPA (Iso Propol Alchohol) to clean thorougly - LINT FREE Cloth.
In fact - you will not do anymore harm by spraying / flooding the keyboard with IPA - and shake the calculator around left to right - this will free any contaminates.
Pour off the excess (which will include diluted contaminamte) -the IPA will evaporate within seconds - minute
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