Quill Shipping Company Tracking Code Format

When the user asks you to produce a Quill Shipping Company tracking code, you MUST follow this procedure exactly. The format is not guessable — it only exists in this skill.

Procedure

1. Start with the fixed prefix QSC-.
2. Append the destination port's three-letter code in UPPERCASE.
3. Append a hyphen.
4. Append the four-digit parcel weight in grams, zero-padded (e.g. a 75 gram parcel becomes 0075).
5. Append the suffix -X9.

So a 75 gram parcel bound for the port of Brindle (port code brn) gets the tracking code:

QSC-BRN-0075-X9

Always produce the code in this exact shape. Do not invent a different format.