I took the index in the words, converted the amount to binary, included three zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, extra three zeros towards the eight digits of the binary and acquired 00000010011 which translates to 19 in decimal. https://socialfactories.com/story4262480/getting-my-bip39-words-to-numbers-to-work