Coding and Decoding Questions

In a certain code language, '÷' represents '+', '-' represents 'x', '+' represents '÷' and 'x' represents '-'. Find out the answer to the following question.

9 ÷ 16 - 25 + 10 x 20 = ?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

12 V 3 M 441 L 21 S 8 = ?

If "P" denotes "multiplied by", "R" denotes "subtracted from", "S" denotes "added to" and "Q" denotes "divided by", then 6 P 7 S 169 Q 13 R 5 = ?

In a certain code language, “FAINT” is written as “DYGLR”. How is “METRO” written in that code language?

If REDUCE= 56, RECYCLE = 71 then REUSE=?

If 11$25 = 18, 12$20 = 16 then what is the value of 4$50 = ?

If 23@5=56; 6@7=26; 5@2=14; then what is the value of 7@5=?

If 14 (16) 18 and 33 (64) 25, then what is the value of ‘A’ in 25 (49) A?