I took the index from the words, converted the amount to binary, extra a few zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, extra 3 zeros for the 8 digits from the binary and got 00000010011 which interprets to 19 in https://bookmarkingquest.com/story18807027/getting-my-bip39-words-to-numbers-to-work