Python-сообщество

 def expanded_form(num):
    num = str(num)
    count = 1
    result = []
    for i in range(len(num)):
        result.append(num[i] + ('0' * (len(num) - count)))
        count += 1
    for i in result:
        for x in i:
            if x == '0':
                result.remove(i)
                break
            break
    for i in result:
        i = str(i)
        if i[0] == '0':
            result.remove(i)
    return ' + '.join(result))

 print(' + '.join([i + (len(str(args)) - j - 1) * '0' for j, i in enumerate(str(args)) if int(i)]))

  
def split_num(num):
    l = []
    i = 0
    while num:
        temp = (num % 10) * 10**i
        if temp:
            l.append(temp)
        i += 1
        num //= 10
    return l[::-1]
res = split_num(73000004)
print(' + '.join(str(i) for i in res))