Coding and Decoding Questions

If P denotes +, Q denotes -, R denotes '÷', and S denotes X, then: 18S36R12Q6P7 = ?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 154 B 11 C 6 A 6 D 27= ?

If 9#3=6; 15#3=9; 60#4=32; then what is the value of 27#3=?

In a certain code language, "OPTIMIST" is written as "LKRNRGHG". How is "PESSIMIST" written in that code language?

If 56 x 11 = 9, 37 x 13 = 6, 42 x 12 = 3, then find the value of 87 x 77.

If ENTRY is coded as 98462 and STEADY is coded as 749312, then how is NEATNESS written in that code?

If RESEARCH is $#!#%$&@ then SCARE is

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

27 x 3 ÷ 30 + 5 - 125 = ?