Coding and Decoding Questions

In a certain code language, "BORROW" is written as "769965" and "BOMB" is written as "7647". How is "WOMB" written in that code language?

If in a certain language TEACHER is coded as QBXZEBO, then how is STUDENT coded in the same language?

In a certain code language, "DIAMOND" is written as "4895064" and "GAME" is written as "7953". How is "MANGO" written in that code language?

If "A" denotes "added to", "B" denotes "divided by", "C" denotes "multiplied by" and "D" denotes "subtracted from", then 116 B 29 C 6 A 24 D 45 = ?

In a certain code language, “FRIED” is written as “EQHDC”. How is “RUSTY” written in that code language?

If L denotes 'x', M denotes '÷' , P denotes '+' and Q denotes '-'  then 16P24M8Q6M2L3

If x means +, + means ÷, − means x and ÷ means −, then 8x7−8+40÷2 = ?

If 4 x 5 x 2 = 524, 3 x 7 x 2 = 723 and 6 x 8 x 7 = 876 then 9 x 4 x 5 = ?