280

numbers inversed at which Celes learns pearl (lv 72 inverses to... 27)
times cecils starting level (10)
plus his starting level (10)

281

numbers inversed at which Celes learns pearl (lv 72 inverses to... 27)
times cecils starting level (10)
plus his starting level (10)
plus 1

Did you just give up?

I think she did. Or she's too busy.

282

75 (max level in FFXI)
plus 99 (max level of most final fantasies)
plus rydias starting level 1
plus 99 (mp for Zodiac)
plus ramza's starting level 1
plus Locke's starting level 7

283

255 - Battle power of Atma Weapon
plus 30 - max level in FF Tactics Advance
minus 2 - number of starting members in FF Tactics Advance