I took the index of the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to transform it to binary, added 3 zeros into the eight digits from the binary and obtained 00000010011 which interprets to 19 in decimal. https://pageoftoday.com/story4457474/not-known-factual-statements-about-bip39-explained