It is 556.
The day of the week 263 days from Monday is Friday. Take 263. Divide by 7. You get 37.7something. Subtract 37, leaving the .7something. Multiply by 7. You get 4. Monday plus four days is Friday.
263 + 2345 = 2608
percentage = fraction x 100 37/256 x 100 = 1429/64 % ≈ 14.45 %
82 + 263 + 17 - 63 = 299
83 + 263 + 17 - 63 = 300
7 times 37 and 37 plus 37 plus 37 plus 37 plus 37 plus 37 plus 37 are the same value: 259
256
256 + 113 = 369
256 + 1 = 257
It is: 3136+256 = 3392
18 + 256 = 274
256 +384 = 640