Let A={{R}_{0}}\times R, where {{R}_{0}} denote the set of all non-zero real numbers. A binary operation ‘O’ is defined on A as follows: (a,b)O(c,d)=(ac,bc+d) for all \left( a,b \right),\left( c,d \right)\in {{R}_{0}}\times R.(iii) Find the invertible element in A.