I took the index in the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the very first part of the hexadecimal to transform it to binary, extra 3 zeros on the 8 digits with the binary and got 00000010011 which interprets to 19 in https://bookmarkzap.com/story19505529/new-step-by-step-map-for-ledger-seed-phrase-bip39