This year, the age of the father is three times the age of the daughter, and after 12 years, the age of the father will be twice the age of the daughter. How old is the daughter this year?
12 2 [OP_MUL] 12 [OP_SUB] 3 2 [OP_SUB] [OP_DIV]
var_a = 12
var_b = 2
var_c = var_a * var_b
var_d = 12
var_e = var_c - var_d
var_f = 3
var_g = 2
var_h = var_f - var_g
var_i = var_e / var_h
print(int(var_i))