There are 6 robot toys that look different. Find the number of cases in which one is given each to Kahi, Nahee, Dahee, and Rahee.
6 1 1 [OP_ADD] 1 [OP_ADD] 1 [OP_ADD] [OP_PERM]
var_a = 6
var_b = 1
var_c = 1
var_d = var_b + var_c
var_e = 1
var_f = var_d + var_e
var_g = 1
var_h = var_f + var_g
var_i = 1
var_a = int(var_a)
var_h = int(var_h)
for i, elem in enumerate(range(var_h)):
    var_i = var_i * (var_a-i)
print(int(var_i))