Need some help on an algebra calculator

Question

I want a fully functioning calculator where you put in things like 1+2 or 1*2 or 1+a or 1*a, that sort of thing. However I am having some trouble when combining + and *. Any ideas how I could improve it?

What I have so far (sorry about the messy and unnecessary conversions from str to int and back):

class Math:
    def Calculate(stuff):
        result = 0
        resultstr = ""
        if "*" in stuff:
            y = stuff.split("*")
            for x in y:
                if result == 0:
                    result = x
                else:
                    try:
                        x = int(x)
                    except:
                        result = str(result) + x
                        result = result.replace("0*", "")
                        result = result.replace("*0", "")
                    else:
                        try:
                            result = int(result) * int(x)
                        except:
                            resultstr = str(result)
                            result = x
        if "+" in stuff:
            y = stuff.split("+")
            for x in y:
                try:
                    x = int(x)
                except:
                    result = str(result) + "+" + x
                    result = result.replace("0+", "")
                    result = result.replace("+0", "")
                else:
                    try:
                        result = int(result) + int(x)
                    except:
                        resultstr = str(result) + "+"
                        result = x
        
        finalresult = str(resultstr)+str(result)
        print(str(finalresult))
h = Math
h.Calculate("a*5+5")

Answer 1

Take the example you just gave (a*5+5). If I understand exactly your program, it will find that "stuff" contains *, so it will divide it into x=a and y=5+5. By doing so, you're assigning 5+5 to result which I don't think it's what you want to do.

PS: Little piece of advice: Try to name your variables in an understandable way. For example, I would call stuff something like query.