I took the index on the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, added three zeros to the 8 digits from the binary and received 00000010011 which interprets to 19 in https://bookmarkspecial.com/story19116980/how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-definition