@GoneAwol about the widow who threw 2 coins in the treasury box ,.. Who's treasury box? And in Mark we see that many rich people threw a lot of money in... so who knows how much was already in the treasury box, i think a surplus and more than they did need.
The treasury was usually a building or a room, where money or other valuables are kept for security. Numbers 31:54 indicates that at an early period “the tent of meeting” served, in a sense, as a sacred treasury holding contributed gold.
There is never money left over since we use all of it at a certain time when needed.