Editing Treasure map (Dragon Quest IX) (section)

====Level====
The level formula is:
<pre>
|l| = ((f - 2) * 3) + ((m - 1) * 3) + ((b - 1) * 3) + r()
</pre>
or, to simplify:

<pre>
|l| = ((f + m + b - 4) * 3)  + r()

l: new map level
f: number of grotto floors/basements, not including boss floor
m: base monster rank of grotto
b: boss number
r(): random number between -5 and 5
</pre>

So for a map that has 8 floors (not including boss floor), monster rank 5, and boss 5 the level would be computed as:

<pre>
|l| = ((8 - 2) * 3) + ((5 - 1) * 3) + ((5 - 1) * 3) + r()
|l| = (18 + 12 + 12) + r()
|l| = 42 + r()
37 <= l <= 47
</pre>
So the level will be between 37 and 47, depending on the random value generated between -5 and 5.