I was supposed to multiply a certain number by 6, but by mistake, adding 6 to it and multiplying it by 2 resulted in 28. Find the correct calculated value.
28 2 [OP_DIV] 6 [OP_SUB] 6 [OP_MUL]
var_a = 28
var_b = 2
var_c = var_a / var_b
var_d = 6
var_e = var_c - var_d
var_f = 6
var_g = var_e * var_f
print(int(var_g))