Coding and Decoding Questions

In a certain code language, '+' represents 'x', '-' represents '+', 'x' represents '÷' and '÷' represents '-'. What is the answer to the following question?

54 x 9 - 3 ÷ 4 = ?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then 11 V 9 M 88 L 11 S 9 = ?

If in a certain code language, PROMOTION is written as 365458957, how will the word MONITOR be written in that code language?

In a certain code language, “MOTOR” is written as “ORXTX”. How is “GUARD” written in that code language?

In a certain code language, “TURTLE” is written as “RRNRIA”. How is “LOYALS” written in that code language?

In a certain code, 327 means 'don't cut tree', 635 means 'plant one tree', 138 means 'tree gives shade' and 4953 means 'we must plant tree'. Which digit represents 'shade'?

If 'due to you' is coded as 'ba da ca', 'he is due' as 'xe ba le' and 'is sue to' as 'ba xe ca', then 'you' = ?

In a certain code language, “RAPID” is written as “GLSDU”. How is “WATER” written in that code language?