I took the index from the words, converted the amount to binary, added 3 zeros, calculated the sha256 digest, took the main Section of the hexadecimal to convert it to binary, included a few zeros to the 8 digits in the binary and got 00000010011 which interprets to 19 in https://classifylist.com/story20570088/the-definitive-guide-to-bip39-seed-phrase