We look at the division of 21689196 by 126 
Let's see how many times 126 fits into 21689196.

Step 1:
2 divided by 126 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 126

Let's proceed to step 2:
21 divided by 126 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Fetch the next digit (6) from the dividend, attach it to 21 and continue: 216 / 126

Let's proceed to step 3:
216 divided by 126 is 1 with a remainder of 90.
The next digit of our result is 1. 
Result so far: 1.0
Subtracting 126 from 216 leaves us with 90.
Bring next digit (8) of the dividend behind the 90 and repeat the process: 908 / 126

Advancing to step 4:
If we divide 908 by 126, we get 7 and a remainder of 26.
Put 7 as the next digit of the answer. 
Result so far: 17.0
Deduct 882 from 908 and we're left with 26.
Bring next digit (9) of the dividend behind the 26 and repeat the process: 269 / 126

Advancing to step 5:
269 divided by 126 is 2 with a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 172.0
Subtract 252 from 269 to get 17.
Take the next digit (1) from the dividend and append it to 17, then repeat: 171 / 126

Going ahead to step 6:
171 divided by 126 is 1 with a remainder of 45.
Write down 1 as next digit of the result. 
Result so far: 1721.0
Subtracting 126 from 171 leaves us with 45.
Bring next digit (9) of the dividend behind the 45 and repeat the process: 459 / 126

Advancing to step 7:
When dividing 459 by 126, we get 3 with a remainder of 81.
The number 3 becomes the next digit in our result. 
Result so far: 17213.0
Deduct 378 from 459 and we're left with 81.
Include the next digit (6) from the dividend after 81, then repeat: 816 / 126

Moving on to step 8:
If we divide 816 by 126, we get 6 and a remainder of 60.
Write down 6 as next digit of the result. 
Result so far: 172136.0
Subtract 756 from 816 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 9:
When dividing 600 by 126, we get 4 with a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 172136.4
Subtracting 504 from 600 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 10:
960 divided by 126 is 7 with a remainder of 78.
Use 7 as the next digit of our solution. 
Result so far: 172136.47
If we subtract 882 from 960, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 11:
If we divide 780 by 126, we get 6 and a remainder of 24.
Put 6 as the next digit of the answer. 
Result so far: 172136.476
The remainder is 24 after subtracting 756 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 12:
240 divided by 126 is 1 with a remainder of 114.
Put 1 as the next digit of the answer. 
Result so far: 172136.4761
Subtract 126 from 240 to get 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Moving on to step 13:
126 goes into 1140 9 times with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 172136.47619
Deduct 1134 from 1140 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 14:
If we divide 60 by 126, we get 0 and a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 172136.47619
If we subtract 0 from 60, we get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 15:
If we divide 600 by 126, we get 4 and a remainder of 96.
Put 4 as the next digit of the answer. 
Result so far: 172136.4761904
If we take 504 away from 600, we end up with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Step 16:
The number 126 fits into 960 7 times, leaving a remainder of 78.
Put 7 as the next digit of the answer. 
Result so far: 172136.47619047
If we subtract 882 from 960, we get 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

In conclusion, the division gives 172136.47619047 with a balance of 7.8e-08.