what is the command ( syntax ) of getting
Q and remainder .

On dividing 999 by 100 , i should get 9 as Q and Remainder as 99 .

What is the syntax of getting the value of 10 to the power 3

i don't want to use 10*10*10 .

some direct command ?

Thanks

if you got 'bc' installed you can use that, with the flag -l, like this:
user@moo:~$ echo 999/100 | bc -l
9.99000000000000000000

% is the generally used sign for modulus (i.e. getting the remainder in division)

^ is generally used for powers (e.g. 10^3)

so your examples are 999%100 and 10^3

Your pal,
bodly