I took the index in the words, transformed the amount to binary, extra 3 zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, included 3 zeros into the 8 digits from the binary and acquired 00000010011 which interprets to 19 in decimal. https://bookmarkfame.com/story18681108/not-known-factual-statements-about-bip39-explained