We look at the division of 21921489 by 122 
We want to divide 21921489 by 122.

Step 1:
If we divide 2 by 122, we get 0 and a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 122

Going ahead to step 2:
If we divide 21 by 122, we get 0 and a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Append the next digit (9) from the dividend to 21 and continue with: 219 / 122

Going ahead to step 3:
122 can be fit into 219 1 times, resulting in a remainder of 97.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 97 after subtracting 122 from 219.
Grab the next digit (2) from the dividend, add it to 97, then carry on: 972 / 122

Advancing to step 4:
When dividing 972 by 122, we get 7 with a remainder of 118.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
Subtracting 854 from 972 leaves us with 118.
Fetch the next digit (1) from the dividend, attach it to 118 and continue: 1181 / 122

Moving on to step 5:
122 can be fit into 1181 9 times, resulting in a remainder of 83.
The next digit of our result is 9. 
Result so far: 179.0
Deduct 1098 from 1181 and we're left with 83.
Include the next digit (4) from the dividend after 83, then repeat: 834 / 122

Moving on to step 6:
If we divide 834 by 122, we get 6 and a remainder of 102.
Write down 6 as next digit of the result. 
Result so far: 1796.0
If we take 732 away from 834, we end up with 102.
Bring next digit (8) of the dividend behind the 102 and repeat the process: 1028 / 122

Let's proceed to step 7:
122 goes into 1028 8 times with a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 17968.0
Subtract 976 from 1028 to get 52.
Grab the next digit (9) from the dividend, add it to 52, then carry on: 529 / 122

Let's proceed to step 8:
If we divide 529 by 122, we get 4 and a remainder of 41.
The next digit of our result is 4. 
Result so far: 179684.0
Deduct 488 from 529 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Advancing to step 9:
410 divided by 122 is 3 with a remainder of 44.
Put 3 as the next digit of the answer. 
Result so far: 179684.3
Subtracting 366 from 410 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 10:
If we divide 440 by 122, we get 3 and a remainder of 74.
Use 3 as the next digit of our solution. 
Result so far: 179684.33
The remainder is 74 after subtracting 366 from 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Our division results in 179684.33 with a remaining 0.074.