Very simple: 10011110 1st Octet Value = 128 2nd Octet Value = 0 (64) 3rd Octet Value = 0 (32) 4th Octet Value = 16 5th Octet Value = 8 6th Octet Value = 4 7th Octet Value = 2 8th Octet Value = 0 (1) so we add 128+16+8+4+2=158 and there is your Answer