A way to make money on servers, by lending money to people in need. There is an interest of 1 item of choise pr. half stack of said item lended. there are lamps indicating systems in use, and it is completely tileable. This system uses locked repeaters in order to create a series of pulses based on the comparator output from a hopper used as storage. The amount removed from the hopper will increase the amount of items taken away from the hopper. These items are the extra interest, and will flow into another chest ment to store the profit from each module.