In the far away town of Catherby all the locals do day and night is fish. Always by the shore, always holding their rods.

One day a young man named Edwin decides he doesn't want to simply wait for the fish to come to him, instead he wants to go to the fish and catch them on the open waters with a net.

He visits the local manor to request a license to use a boat from his Lord, only to be told there is a charge of 4,400 ¢τ a month for the license, but he must purchase his own boat, and net separately after getting his license from the local Fishery.

The Boat and Net together cost a total of 1,700 ¢τ. Oh how would be long for the chance to go out on the open sea, but alas he has only as of yet managed to save 800 ¢τ.

In order to earn the remainder he needs to find himself a paying job .. And finds one working at the Fishery where he later needs to buy the equipment he needs. They offer him a discount of 5% on any equipment, plus basic wage of 250 ¢τ a week, and a bonus of 5 ¢τ for every fish he sells, which will be paid weekly.

Question: Assuming Edwin manages to sell 20 fish a week, how long will it take him to earn the rest of the funds he needs?

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