The following ciphertext is achieved by encrypting the plaintext with a row transposition cipher. The key used to encrypt the plaintext is "3156247" and the ciphertext is given below in the box. Your task is to recover the plaintext by performing decryption of the ciphertext. Write down all the steps you perform on your ''answer sheet''.

H R K E H E L H C T A U R I R O E Y E C T E R M T T I W A I R W S N E U

E O V D E Y F T E R L E H A H O O H G Y F N I B D O O G A W L U E E