Error in Build a JavaScript Calculator

Hi campers,
I don’t know if it has been pointed out, but in this project https://codepen.io/freeCodeCamp/full/rLJZrA from this challenger https://www.freecodecamp.org/challenges/build-a-javascript-calculator , the calculator has an error. Here the error:
Calcolatrice_codePen

I wrote 2x3+3x2 and the result should be
12, but this give me 18.