When there are six different people, what is the number of cases in which you select two of them and make one president and the other one secretary?
6 1 1 [OP_ADD] [OP_PERM]
var_a = 6
var_b = 1
var_c = 1
var_d = var_b + var_c
var_e = 1
var_a = int(var_a)
var_d = int(var_d)
for i, elem in enumerate(range(var_d)):
    var_e = var_e * (var_a-i)
print(int(var_e))