How long from 82-99 fletching? Runescape?

So I have level 82 fletching in Runescape. and i have only been botting maple logs into maple longbows and I was wondering how much longer I have to bot maples until i get 99 fletching. Please tell me in the number of hours, and no comments saying stuff like not to bot and stuff like that. i earn about 80k xp per hour.