coins problem

*  “A rich man wanted to distribute his collection of gold coins among his ten children comprising of 5 sons and 5 daughters. He also wanted to give some coins to his car driver. He proceeds on the following basis. The first coin gave to the car driver and then 1/5th of the remaining coins to his first son. He then gave another coin to the car driver and distributed 1/5th of the remaining coins to his second son. This procedure went on till all the five sons received their share. Once all the sons received their shares, he distributed the remaining coins equally among his daughters. Can u find how many gold coins the rich man had?”

 SOLUTION:

Total Coins = 3121.
3121 = (3121-1), (3120 * 1/5), (2496-1), (2495 * 1/5), (1996-1), (1995 * 1/5), (1596-1), (1595 * 1/5), (1276-1), (1275 * 1/5), 1020
Now divide in girls equaly = 1020 / 5 = 204 coins to each