21953 ÷ 9 = 2439 R2
We're going to perform division on 21953 with 9 as the divisor.

Step 1:
9 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of of the result. 
Result so far: 0
Subtract 0 from 2 to get 2.
Bring next digit (1) of the dividend behind the 2 and repeat the process: 21 / 9

Step 2:
9 goes into 21 2 times with a remainder of 3.
Write down 2 as next digit of of the result. 
Result so far: 2
Subtract 18 from 21 to get 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 9

Step 3:
9 goes into 39 4 times with a remainder of 3.
Write down 4 as next digit of of the result. 
Result so far: 24
Subtract 36 from 39 to get 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 9

Step 4:
9 goes into 35 3 times with a remainder of 8.
Write down 3 as next digit of of the result. 
Result so far: 243
Subtract 27 from 35 to get 8.
Bring next digit (3) of the dividend behind the 8 and repeat the process: 83 / 9

Step 5:
9 goes into 83 9 times with a remainder of 2.
Write down 9 as next digit of of the result. 
Result so far: 2439
Subtract 81 from 83 to get 2.

The final result is 2439 with a remainder of 2.