I took the index on the words, transformed the number to binary, additional three zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, added 3 zeros to the 8 digits with the binary and received 00000010011 which interprets to 19 in decimal. https://socialmediainuk.com/story20646034/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition