When a natural number A is divided by a natural number B, the quotient is 28 and the remainder is 4. Find the smallest A among all possible numbers that can be A.
5 28 [OP_MUL] 4 [OP_ADD]
var_a = 5
var_b = 28
var_c = var_a * var_b
var_d = 4
var_e = var_c + var_d
print(int(var_e))