I took the index with the words, converted the quantity to binary, included three zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to transform it to binary, added a few zeros for the eight digits in the binary and obtained 00000010011 which translates to 19 https://socialfactories.com/story4293611/the-5-second-trick-for-ledger-seed-phrase-bip39