This year, the father is 35 years old, and the son is 5 years old. In how many years does the sum of the ages of the father and son become 60?
60 35 5 [OP_ADD] [OP_SUB] 2 [OP_DIV]
var_a = 60
var_b = 35
var_c = 5
var_d = var_b + var_c
var_e = var_a - var_d
var_f = 2
var_g = var_e / var_f
print(int(var_g))