The Calculator is a key item that appears in Paper Mario.


The Calculator was stolen from Rowf by the Shy Guys during the events of Chapter 4. Because he doesn't have his Calculator, Rowf cannot sell any items at his badge shop until Mario defeats the Shy Guy holding it back to him. Although this is actually optional and doesn't need the Calculator to progress in the game, Mario must get it if he wants to buy any badges from Rowf. If Mario brings Rowf back his Calculator, the badge shop owner rewards him with the I Spy badge.

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