21291434 divided by 126 
Our goal is to divide 21291434 by 126.

Step 1:
126 can be fit into 2 0 times, resulting in a remainder of 2.
Use 0 as the next digit of our solution. 
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 / 126

Moving on to step 2:
126 can be fit into 21 0 times, resulting in a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 21 and we're left with 21.
Take the next digit (2) from the dividend and append it to 21, then repeat: 212 / 126

Going ahead to step 3:
126 can be fit into 212 1 times, resulting in a remainder of 86.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 126 from 212 and we're left with 86.
Grab the next digit (9) from the dividend, add it to 86, then carry on: 869 / 126

Let's proceed to step 4:
126 goes into 869 6 times with a remainder of 113.
Write down 6 as next digit of the result. 
Result so far: 16.0
Subtracting 756 from 869 leaves us with 113.
Include the next digit (1) from the dividend after 113, then repeat: 1131 / 126

Step 5:
126 can be fit into 1131 8 times, resulting in a remainder of 123.
Record the quotient 8 as the next digit in the result. 
Result so far: 168.0
The remainder is 123 after subtracting 1008 from 1131.
Bring next digit (4) of the dividend behind the 123 and repeat the process: 1234 / 126

Let's proceed to step 6:
126 can be fit into 1234 9 times, resulting in a remainder of 100.
Put 9 as the next digit of the answer. 
Result so far: 1689.0
If we subtract 1134 from 1234, we get 100.
Append the next digit (3) from the dividend to 100 and continue with: 1003 / 126

Let's proceed to step 7:
If we divide 1003 by 126, we get 7 and a remainder of 121.
Put 7 as the next digit of the answer. 
Result so far: 16897.0
Subtracting 882 from 1003 leaves us with 121.
Take the next digit (4) from the dividend and append it to 121, then repeat: 1214 / 126

Step 8:
126 can be fit into 1214 9 times, resulting in a remainder of 80.
Record the quotient 9 as the next digit in the result. 
Result so far: 168979.0
Deduct 1134 from 1214 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 9:
The number 126 fits into 800 6 times, leaving a remainder of 44.
The number 6 becomes the next digit in our result. 
Result so far: 168979.6
Subtract 756 from 800 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Advancing to step 10:
440 divided by 126 is 3 with a remainder of 62.
Record the quotient 3 as the next digit in the result. 
Result so far: 168979.63
Deduct 378 from 440 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Moving on to step 11:
The number 126 fits into 620 4 times, leaving a remainder of 116.
The number 4 becomes the next digit in our result. 
Result so far: 168979.634
Deduct 504 from 620 and we're left with 116.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1160, and continue the process.

Moving on to step 12:
If we divide 1160 by 126, we get 9 and a remainder of 26.
The number 9 becomes the next digit in our result. 
Result so far: 168979.6349
Subtract 1134 from 1160 to get 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Step 13:
The number 126 fits into 260 2 times, leaving a remainder of 8.
Record the quotient 2 as the next digit in the result. 
Result so far: 168979.63492
Subtract 252 from 260 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 14:
If we divide 80 by 126, we get 0 and a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 168979.63492
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 15:
The number 126 fits into 800 6 times, leaving a remainder of 44.
Use 6 as the next digit of our solution. 
Result so far: 168979.6349206
If we subtract 756 from 800, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 16:
The number 126 fits into 440 3 times, leaving a remainder of 62.
Use 3 as the next digit of our solution. 
Result so far: 168979.63492063
Subtracting 378 from 440 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The quotient of the division is 168979.63492063, and the remainder is 6.2e-08.