Coding and Decoding Questions

In a code language, FATE is written as 61205. What is the code for LEAN?

If "α" denotes "subtracted from", "β" denotes "multiplied by", "θ" denotes "added to" and "δ" denotes "divided by", then 10 θ 8 β 4 δ 8 α 9 = ?

If 11$25 = 18, 12$20 = 16 then what is the value of 4$50 = ?

If "S" denotes "multiplied by", "V" denotes "subtracted from", "M" denotes "added to" and "L" denotes "divided by", then

12 V 3 M 441 L 21 S 8 = ?

If CHANTED is coded as ZEXKQBA, then how will MAY be coded as?

If MIGRANT is coded as LHFQZMS, then how will GEL be coded as?

If 40@8 = -5, 30@3 = -10 and 20@5 = -4, then find the value of 60@3 = ?

If 23@5=56; 6@7=26; 5@2=14; then what is the value of 7@5=?