How to gain 140m exp in 4 hours

hey fellow warriors, i wanted to ask u all..what will be the best solo training place for a lvl 148 hero pls tell.. i havent trained for more then a year and havent played much either so i dont know wats going on maplestory. thank u for ur time guyz. and plus dont worry about my dmg... and if u know how much accuracy would i need to hit them 100 percent.


thank u guyz