I took the index on the words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to convert it to binary, additional three zeros for the 8 digits of the binary and got 00000010011 which interprets to 19 in decimal. https://bookmarksurl.com/story4290981/considerations-to-know-about-bip39-word-list-pdf