Let's divide 21235 by 45
We're looking to find how many times 45 goes into 21235.

Let's proceed to step 1:
When dividing 2 by 45, we get 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 45

Advancing to step 2:
If we divide 21 by 45, we get 0 and a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 21 after subtracting 0 from 21.
Append the next digit (2) from the dividend to 21 and continue with: 212 / 45

Step 3:
When dividing 212 by 45, we get 4 with a remainder of 32.
Put 4 as the next digit of the answer. 
Result so far: 4.0
If we subtract 180 from 212, we get 32.
Bring next digit (3) of the dividend behind the 32 and repeat the process: 323 / 45

Step 4:
323 divided by 45 is 7 with a remainder of 8.
Write down 7 as next digit of the result. 
Result so far: 47.0
Subtract 315 from 323 to get 8.
Include the next digit (5) from the dividend after 8, then repeat: 85 / 45

On to step 5:
The number 45 fits into 85 1 times, leaving a remainder of 40.
Use 1 as the next digit of our solution. 
Result so far: 471.0
If we take 45 away from 85, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 6:
When dividing 400 by 45, we get 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 471.8
The remainder is 40 after subtracting 360 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 7:
If we divide 400 by 45, we get 8 and a remainder of 40.
Write down 8 as next digit of the result. 
Result so far: 471.88
Deduct 360 from 400 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

After the division, we end up with 471.88 and a remainder of 0.04.