Turn on your sound! After the intro, press the buttons. It will moo longer the bigger the number. Behind the scenes, it works just like a regular calculator, but the mooing is maybe a little less useful than numbers... If you put in a number that's too big, the only way to stop it is to press the stop button... sorry (not sorry)!
Many thanks to @CoronalReef296 for making the original! I loved CoronalReef296's project and thought it would be fun to make it interactive. The calculator works, it just doesn't have a display. If you want to see the number, go into the cow sprite and drag the "say (number)" block into the mooing script. Sound: "Country Boy" by Bensound "Click2" - Sebastian on SoundBible