If 123 added in a number then the number becomes 133\(\frac{1}{3}\)% of itself. Find the number.

522 441 369 414

369

133\(\frac{1}{3}\)% =  \(\frac{400}{3}\)% = \(\frac{4}{3}\)   Actual No.     :       New no.          3             :           4       ⇒ +1R ⇒ 1R = 123 ⇒ 3R = 369 = Actual No.