The OP's (and many other's) income per hour is too low because they are not actually capturing their total dollars earned if they are just dividing assets by hours played. If you throw in the totals of all income, you will see that the total income you come up with is likely to be less than the value of your current assets. This is because income from mission rewards, CGs, and other sources are not included in the incomes shown. For example, if you did the Ram Tam missions, those payouts may not be included in your income or assets.
This method is not perfect, as modules may or may not be included in the total for assets (actually, they are). I sold a cargo rack from my anaconda, and I observed that my total spent on modules did not change (to reverse) nor did the value of my assets. I sold some exploration data, and observed that my total assets did increase accordingly. Since the value of my assets did not increase when I sold the cargo rack (increasing my cash balance) but it did when I sold the exploration data, then that would indicate that the asset value does indeed include modules. However, buying a new module increases the amount spent on outfitting but not assets, so the total spent on outfitting cannot be used to figure out the income lost on resale of modules.
To determine your total income (roughly):
1. Total value (positive number) for all expenses, except for ships and outfitting (be sure to include fees, fines, crew expenses, etc)
2. Value of Assets (This already includes cash balance, ships, and fitted modules (haven't tested stored modules ,but I assume it does).
This should be close to your total income. It will be short by the total value of money lost through resale of ships/modules, ship transfer fees, loss of ship (didn't rebuy), and probably some others.
Subtract your cash balance from the value of assets to see your ship/module value.
If you add up all of your income sources, and subtract this from your calculated total income, you now have something close to your income from missions/CGs and other sources.
As of right now:
1. Expenses (less ships/outfitting) : $107,330,762
2. Assets: $866,522,005
Total calculated income: $973,852,767 (I will sell and rebuy modules before I transfer them, and the same with ships, so this number is probably higher by $20-$50 mil CR, but that won't make much of a difference)
Hours played: 774
CR/Hr: $1,258,207.71
Interestingly, my total income from listed sources is $423,128,235 , which means at least $550,724,532, or 56.6% of my total income has been from missions and CGs.
I have $229,403,336 in exploration income, and the second highest is $131,052,012 from bounties, but both of these combined are still less than mission/CG payouts.