Do You Know Why We Have 25 Cent Coins?

The united states lost 70 million dollars minting pennies last year. We got a currency that no one uses to purchase goods or services. What we need to do immediately is eliminate both pennies and nickels, which now costs the us Mint tens of millions of dollars in losses per year. It i, i, i cannot believe that pennies are still happening 15 or 20 or forty years after we should have gotten rid of them. But i don't think we need to introduce a 25 dollar bill because it works fine to have twenties.