Coding and Decoding Questions

If DECEMBER is coded as EDECBMRE then FEBRUARY will be coded as

If "x" denotes "added to", "÷" denotes "subtracted from", "+" denotes "divided by" and "–" denotes "multiplied by", then 14 x 12 – 16 ÷ 18 = ?

If FRIEND is coded as HTKGPF then REVEAL will be coded as:

If 18 x 12 = 206 and 19 x 22 = 408, then 23 x 36 = ?

If A = 1, AND = 19, then ANT = ?

In a certain code language, "SINGING" is written as "TJOHJOH". How is "DANCING" written in that code language?

If CROWNED is coded as APMULCB, then how will TAP be coded as?

If FRISKED is coded as HTKUMGF, then how will SUN be coded as?