If Yoongi's initial money is 3,800 won, and he receives 100 won every day from today, how much money will he have after 7 days?
3800 100 7 [OP_MUL] [OP_ADD]
var_a = 3800
var_b = 100
var_c = 7
var_d = var_b * var_c
var_e = var_a + var_d
print(int(var_e))