def expression_matter(a, b, c):

    # ensuring we have the right input // error handling

    if not isinstance(a, int) or not isinstance(b, int) or not isinstance(c,int):
        raise TypeError("sorry, only intergers allowed - try again")
    if not a >= 1 or not a <= 10:
        raise ValueError("sorry, a needs to be between 1 and 10")
    if not b >= 1 or not b <= 10:
        raise ValueError("sorry, b needs to be between 1 and 10")
    if not c >= 1 or not c <= 10:
        raise ValueError("sorry, c needs to be between 1 and 10")

    #list of possible calculations
    calc1 = [a * (b + c)]
    calc2  = [a * b * c]
    calc3 = [a + b * c]
    calc4 = [(a + b) * c]
    calc5 = [a + b + c]

    #computing the largest calculation

    highest_so_far = None
    for result in calc1:
        highest_so_far = result

    for result in calc2:
        if result >= highest_so_far:
            highest_so_far = result

    for result in calc3:
         if result >= highest_so_far:
            highest_so_far = result

    for result in calc4:
        if result >= highest_so_far:
            highest_so_far = result

    for result in calc5:
        if result >= highest_so_far:
            highest_so_far = result

    return highest_so_far