def sum_card(lst):
    """
    Takes in a list of numbers and returns the summed total as a string.

    >>> sum_card([1, 8, 9, 9, 7, 6, 7, 5, 5, 3, 5, 6, 1, 5, 8])
    '85'
    """
    total = 0
    for num in lst:
        total += num
    return str(total)