You want to distribute 67 candies to students. Each student took 4 candies, so there are 3 candies left. How many students do you have?
67 3 [OP_SUB] 4 [OP_DIV]
var_a = 67
var_b = 3
var_c = var_a - var_b
var_d = 4
var_e = var_c / var_d
print(int(var_e))