def arithmetic_arranger(x, solve=False) :
    
    mathlist = list()
    numlist = list()
    onlynumbers = list()
    mathlist.append(x)
    first = ''
    second = ''
    third = ''
    fourth = ''
    
    for problems in mathlist :
        numproblems = len(problems)

#Diagnostic Phase

        if numproblems > 5 : 
            return ('Error: Too many problems.')
        
        for problem in problems :
            if problem.find('*') > -1 or problem.find('/') > -1: 
                return ("Error: Operator must be '+' or '-'.")

            numlist.append(problem[:problem.find(' ')])
            numlist.append(problem[problem.find(' ') + 1:problem.find(' ') + 2])
            numlist.append(problem[problem.find(' ') + 3:])
            onlynumbers.append(problem[:problem.find(' ')])
            onlynumbers.append(problem[problem.find(' ') + 3:])
        
        for item in onlynumbers:
            if len(item) > 4 :
                return ('Error: Numbers cannot be more than four digits.')
    
        for item in onlynumbers :
            if item.isdigit() is False :
                return ('Error: Numbers must only contain digits.')

#Formatting Phase

        for problem in x :

            first_operand = problem.split(' ')[0]
            operator = problem.split(' ')[1]
            second_operand = problem.split(' ')[2]
            solution = eval(first_operand + operator + second_operand)

            length = max(len(first_operand), len(second_operand)) + 2
            toprow = str(first_operand).rjust(length)
            midrow = operator + str(second_operand).rjust(length -1)
            line = '' 
            bottomrow = str(solution).rjust(length)

            for z in range(length) :
                line += '-'

            first += toprow + '    '
            second += midrow + '    '
            third += line + '    '
            fourth += bottomrow + '    '
            
        first = first[:len(first) -4]
        second = second[:len(second) -4]
        third = third[:len(third) -4]
        fourth = fourth[:len(fourth) -4]
                
        if solve is True :
            string = '\n'.join((first, second, third, fourth))
        
        else :
            string = '\n'.join((first, second, third))

    return print(string)

              
arithmetic_arranger(["32 + 698", "3801 - 2", "45 + 43", "123 + 49"], True)
#print ("\n")
#arithmetic_arranger(["32 + 8", "1 - 3801", "9999 + 9999", "523 - 49"], True)
#print ("\n")
#arithmetic_arranger(['3801 - 2', '123 + 49'])
#print ("\n")
#arithmetic_arranger(['1 + 2', '1 - 9380'])
#print ("\n")
#arithmetic_arranger(['3 + 855', '3801 - 2', '45 + 43', '123 + 49'])
#print ("\n")
#arithmetic_arranger(['98 + 3g5', '3801 - 2', '45 + 43', '123 + 49'])
#print ("\n")
#arithmetic_arranger(['11 + 4', '3801 - 2999', '1 + 2', '123 + 49', '1 - 9380'])
#print ("\n")
#arithmetic_arranger(['44 + 815', '909 - 2', '45 + 43', '123 + 49', '888 + 40', '653 + 87'])
#print ("\n")
#arithmetic_arranger(['3 / 855', '3801 - 2', '45 + 43', '123 + 49'])
#print ("\n")
#arithmetic_arranger(['24 + 85215', '3801 - 2', '45 + 43', '123 + 49'])