If you combine it with solar panels, if you have many years of life left, no debt, and don't mind the noise, you might be able to find a Bitcoin block in 10-20 years, or if you're really unlucky, 31 years.
Of course, you'd have to buy 100 NerdQaxe++ – 4.8 TH/s – 76 Watts, each costing $500 ($5,000 total), not to mention that the solar panels would cost you approximately $10,000 in total (I mean, so you have a net profit).
with 480TH if he is lucky it would be <30 years, if unlucky it is very normal to double the time (27% chance of that happening) roughly the same chance of finding a block in 10 years instead).
again, this does not take anything else into consideration, just a miner sitting in a vacuum.