Find the number of three-digit numbers where each digit is even.
0 9 [OP_LIST_EVEN] 3 [OP_LIST_GET_PRODUCT] [OP_LIST_LEN]
var_a = 0
var_b = 9
list_a = []
if var_a%2!=0:
    for i in range(var_a+1, var_b+1, 2):
        list_a.append(i)
else:
    for i in range(var_a, var_b+1, 2):
        list_a.append(i)
var_c = 3
list_b = [str(i) for i in list_a]
list_b = list(itertools.product(list_b, repeat=var_c))
list_b = [''.join(num_list) for num_list in list_b]
list_b = [str_num for str_num in list_b if str_num[0] != '0']
list_b = [float(i) for i in list_b]
var_d = len(list_b)
print(int(var_d))