Before you start to calculate 255 Ounces, you should know the conversion rate between Ounces and Cup.
The rate is 1.0403082941331E+14 and the math equation is 255 X 1.0403082941331E+14 = 2.6527861500394E+16 .
Quick conversion chart of Ounces to Cups
1 Ounce to Cup = 1.0403082941331E+14 Cup5 Ounce to Cup = 5.2015414706655E+14 Cup10 Ounce to Cup = 1.0403082941331E+15 Cup20 Ounce to Cup = 2.0806165882662E+15 Cup30 Ounce to Cup = 3.1209248823993E+15 Cup40 Ounce to Cup = 4.1612331765324E+15 Cup50 Ounce to Cup = 5.2015414706655E+15 Cup75 Ounce to Cup = 7.8023122059982E+15 Cup100 Ounce to Cup = 1.0403082941331E+16 Cup