Coding and Decoding Questions

If S = 19, SUN = 54 and CAKE = 20 , then MISTAKE = ?

In a code language, AILMENT is written as 1923540. What is the code for DISEASE?

If 4 * 7 * 2 = 361 and 5 * 9 * 1 = 480, then 2 * 1 * 3 = ?

In a certain code language, "WILDHORN" is written as "1133" and "RAPTURE" is written as "1089". How is "PORTLOUIS" written in that code language?

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

If REGAINS is coded as QDFZHMR, then how will PRY be coded as?

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

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