Coding and Decoding Questions

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

In a certain code language, "COPIOUS" is written as "2345389" and "GENEROUS" is written as "16760389". How is "PIGEON" written in that code language?

If STUDENT is coded as 103, what is the code for SCHOOL?

If 3*1 = 20, 6*1 = 50 and 2*6 = -40, then find the value of 5*8 = ?

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

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

In a code language, if LUCK is written as L2U1C3K1, then what is the last digit for the code for XEROX in that same language?

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then
76 x 4 + 4 – 12 ÷ 37 = ?