Coding and Decoding Questions

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 = ?

If BROTHER is coded as GWTYMJW, then SCHOOL is coded as

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then
300 x 10 – 5 + 36 ÷ 57 = ?

In a certain code language, "CERTAIN" is written as "DFSTBJO". How is "CRICKET" written in that code language?

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

In a certain code language, “MAYOR” is written as “NBZPS”. How is “PLAYER” written in that code language?

If 5@1=60; 12@8=200; 16@2=180; then what is the value of 16@10=?

If "#" means "subtraction", "&" means "division", "@" means "addition" and "%" means "multiplication", then 217 & 7 # 3 @ 2 % 7 = ?