I took the index on the words, converted the amount to binary, extra a few zeros, calculated the sha256 digest, took the very first Section of the hexadecimal to transform it to binary, included three zeros for the 8 digits of your binary and obtained 00000010011 which interprets to 19 https://bookmarkalexa.com/story4308368/new-step-by-step-map-for-bip39-english-words