Coding and Decoding Questions

If "A" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by" and "B" denotes "subtracted from", then 72 C 9 D 2 B 6 A 10 = ?

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

If SYSTEM is written as RXRSDL.
How can CORRECT be written in that code?

If 37*14 = 17,
69*33 = 34,
91*125 = 72
then what should 28*56 = ?

If 92 A 42 B 32 = 56 and 72 A 22 B 12 = 44, then 112 A 52 B 72 = ?

In a certain code, 324 means 'are you alright', 783 means 'you come home' and 9271 means 'we are at home'. Which digit represents 'COME'?

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 = ?

In a certain code language, "OCEAN" is written as "PEHES". How is "RIVER" written in that code language?