Is mining a good way of making gralats?

[leaf me alone]

If I calculated correctly and this information is accurate

Level: 99
Rocks Needed: 10150
Time per rock: 0.3 seconds
Time to level up: 50 minutes, 45.0 seconds
Time Taken: 8 weeks, 6 days, 5 hours,42 minutes, 30.0 seconds
Your total rocks: 520000

Assuming that you make 1k an hour doing pizzas
8 weeks 6 days 5 hours 42 minutes 30 seconds in hours is

1493.7083 hours, you would be able to make almost 3,000,000 gralats.
Im not sure how many gralats will you get from 520k rocks.
Mining will eventually become the more profitable job.
Now for the break even part, if you were to continue mining until you broke even you will have to assume that you stop pizza'ing which can or cant be the case.
I'll edit this later with both cases - one where you continue to pizza and one when you dont.
Oh and if Pokey could provide an estimate for the amount of gralats you would get from 520k rocks and underestimate it abit that would be helpful.