Coding and Decoding Questions

In a certain code language, "READ" is written as "18514". How is "RATE" written in that code language?

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

9 ÷ 12 - 15 + 4 x 10 = ?

If REGAINS is coded as QDFZHMR, then how will PRY be coded as?

If 5 # 9 @ 7 = 52 and 3 @ 9 # 2 = – 89, then 7 # 6 @ 9 = ?

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

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= ?

In a code language, AILMENT is written as 1923540. What is the code for DISEASE?

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