If I make 40,000 dollars every 15 minutes then how long will it take me to make a million

If I make 40,000 dollars every 15 minutes then how long will it take me to make a million

Let f be the number of fifteen minute blocks. We're given:
40000f = 1000000

To solve for f, we type this equation into our search engine and we get:
f = 25

Total minutes = Fifteen minute blocks (f) * 15 minutes
Total minutes = 25 * 15
Total minutes = 375 minutes or 6 hours and 15 minutes