How many natural numbers from 1 to 1000 have 3 in the tens place?
1 1000 1 [OP_LIST_ARANGE] 10 3 [OP_LIST_SEARCH_FIXED_DIGIT] [OP_LIST_LEN]
var_a = 1
var_b = 1000
var_c = 1
list_a = [i for i in range(var_a, var_b + 1, var_c)]
var_d = 10
var_e = 3
list_b = [] 
var_d = int(var_d)
var_e = int(var_e)
for i in list_a:
    i = int(i)
    if (i//var_d)%10 == var_e:
        list_b.append(i)
var_f = len(list_b)
print(int(var_f))