Calculating the wages of sin?

So some 2000 years ago a man-god (or god, or man, or something) died on a cross in order to pay the debt for the worlds sin. This payment covered the people living at the time and future generations (and possibly past generations according to who you speak to).

This man-god was sent to hell for three days before being reborn. This gives us a baseline to determine exactly how what a a life's sin is worth.

Let's pretend that Jesus' sacrifice was only for the people living on the planet at the time. According to wiki that's around 300,000 people. Three days for 300,000 people equates to 0.864 seconds per person, in hell.

So here is your figure for the approximate value of a whole life's sin ;

0.864 seconds in hell.

Obviously if you count all the people that have ever lived, even just from the sacrifice onwards, this number becomes even more vanishingly small.

So, do we party on? Or are my calculations out of whack? Did Jesus/God get a discount?