Okay, I'll just do it for you.
If 6,000,000 real years were represented by 80 years, then 1 real year is represented by 80/6,000,000 = 0.00001333 years. Now you want to know how many minutes there are in 0.00001333 years, right? The answer will be a larger number, not a smaller number.
To convert 0.00001333
years (you keep citing the number without the unit, which I think is the cause of your difficulty) to smaller units, we multiply by the appropriate factors. First, to days:
[MATH]0.00001333\text{ years}\times\frac{365.24\text{ days}}{1\text{ year}} = 0.0048699\text{ days}[/MATH]
To convert that to hours:
[MATH]0.0048699\text{ days}\times\frac{24\text{ hours}}{1\text{ day}} = 0.1168768\text{ hours}[/MATH]
To convert that to minutes:
[MATH]0.1168768\text{ hours}\times\frac{60\text{ minutess}}{1\text{ hour}} = 7.012608\text{ minutes}[/MATH]
So your one year is represented by about 7 minutes of a person's life.
Now multiply any of these values by 10,000 to get to your goal. I suggest using years (it will be a fraction) or days.
Another approach would be to skip the one year part, and just use one proportion directly:
[MATH]\frac{10,000}{6,000,000} = \frac{x}{80}[/MATH]
May I ask: Do you ever use proportions or units? If not, then you really shouldn't even be asking this question, because you'll probably use the results incorrectly if you don't understand them.