Agent Smith was a top$-$secret agent for the government. He finds a piece of crucial information that he encrypts with a trail of algorithms as follows. Perform the required encryption and decryption process as listed below to decode his messages:

i$.$ Decrypt "MEVTDIFTERVXIAGN" using Vigenere Cipher with the key "CAREFUL".

ii$.$ Decrypt "JRAWS" with Multiplicative Cipher using Key $=7.$

iii. Decrypt "CANNHCGADODNIOLO" using Rail Fence Cipher with the key $=3.$

iv$.$ Decrypt "RASYxWFEAxBECNOAHRRxEOKEU" with Key $="$ INDIA" using Columnar Cipher.

v$.$ Decrypt "PTWVYAHUATLZZHNL" using Additive Cipher with Key $=7.$ Use the decrypted text as the key to Playfair Cipher to decrypt the message "ITUMBAKNECSORTLSQDMSNVANBLFMTKPRTRTENYNV".

Note :

Merge $\frac{i}{j}$ in the grid and use x as dummy character.

Use mapping $\frac{a}{A}=0.........\frac{z}{Z}=25$

please solve it correctly with detailed explaination