Rule of 72

What is the greatest mathematical discovery? For me, i think it is the "Rule of 72" discovered by Albert Einstein.

If you divide 72 with the compound interest, you will know approximatively how long you will able to obtain 100% return. Example with the compound interest of 9%, you will need ~8 years (72/8) to get a 100% return.

This is the secret discovered by Albert Einstein long time ago, and Warren Buffett is the one that practice it for >69 years, and making him the third richest man in the world!

So by applying Rule of 72 properly, i believe there's no doubt that anyone will be able to build your wealth and achieve your financial goal easily!