Find out what level your champion mastery is at (beyond level 5)

Some people, I included, are looking forward to the future levels 6 and 7 of champion mastery, and perhaps beyond. This thread is here to let those people know who have or are planning to play champions well past the point total needed for level 5 what level they've reached. The exact formula used to determine how many points you need to reach level threshold x is : f(x) = 600*(2x^2-3x+1). So all you have to do to determine what level you are is figure out the lowest value of x that makes f(x) greater than your point total. Your level is then x-1. So far example, if you have 20000 points, x=5 is the lowest value that makes f(x) higher, so you are level 4. For those of you interested in how I figured it out, I'll provide a hint. Look for a pattern in the spacings between each level. For those of you who don't care to plug numbers in, we get: 1 : 0 2: 1800 3: 6000 4: 12600 5: 21600 6: 33000 7: 46800 Riot only has up to level 7 planned so far, but here are some more 8: 63000 9: 81600 10: 102600