I took the index of the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the primary A part of the hexadecimal to transform it to binary, extra three zeros on the 8 digits with the binary and obtained 00000010011 which interprets to 19 in https://telegra.ph/Unlocking-the-World-of-BIP39-A-Comprehensive-Guide-to-Mnemonic-Expressions-and-Word-Listings-01-17