Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
A cargo ship moving from Shanghai to Vancouver navigates for 21 days before reaching port. Customs and regulatory processes in Vancouver last 4 days. Finally, moving the cargo from the port to your rural warehouse takes some time and it always arrives on the seventh day. How many days ago should the ship have departed if your warehouse is expecting the shipment 2 days from today?

### Response:
 Meli inahitaji siku 21 kufika Vancouver.
Taratibu za forodha na udhibiti huko Vancouver zinachukua siku 4.
Hatimaye, kuhamisha mizigo kutoka bandarini kwenda ghala lako la vijijini huchukua muda fulani na kawaida hufika siku ya saba.
Kwa hivyo, meli ilipaswa kuondoka (21+4+7=<<21+4+7=32>>32) siku zilizopita.
Ikiwa ghala lako linatarajia usafirishaji siku 2 kutoka leo, basi meli ilipaswa kuondoka (32-2=<<32-2=30>>30) siku zilizopita.