find the quotient and remainder when 11,109,999,999,997 is divided by 1111.

convert (1100101)2 to base 10 convert 32,145 to octal??????

the sum of the digits of the number 8215 is 8+2+1+5=16=7(mod9). 8215=9(912)+7=7(mod 9). Does this hold for any number?