Purchase

The Captain counted the gold bricks again and made sure his original count was right. When he finished, he once again ended on 53 gold bricks. 

"How much does little Jas owe us again?" the Captain asked.

"51,832 gold coins, captain," the woman answered swiftly.

The Captain turned around toward Ning. "Did you make a mistake, lad?" he asked. "You gave us 53 thousand gold coins."

"Nope, no mistake," Ning answered. 

The Captain thought for a bit. "Are you paying her interest of 1% at the same time?" he asked. "Even so, you are still paying us nearly 700 more coins."

"Oh, no," Ning said. "I have no obligation to pay for what she owes you as interest. That was not part of my oaths."

"That's… true," the captain said. Still, things didn't make sense to the man at all. "Why then? Why pay me so much over? Do you have a favor to ask of me?"