IBPS PO Mains 2019 Paper for online practice

If ‘M × N’ means ‘M is the daughter of N’, ‘M + N’means ‘M is the father of N’, ‘M ÷ N’ means‘M is the mother of N’ and ‘M – N’ means ‘M is thebrother of N’, then in the expression R ÷ Z + M –U × X, how is R related to X?