I took the index in the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the primary A part of the hexadecimal to transform it to binary, included three zeros for the 8 digits in the binary and obtained 00000010011 which translates to 19 in https://bookmarkalexa.com/story5173059/the-5-second-trick-for-ledger-seed-phrase-bip39