21637202 ÷ 126 
We're looking to find how many times 126 goes into 21637202.

Step 1:
The number 126 fits into 2 0 times, leaving a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 126

Let's proceed to step 2:
When dividing 21 by 126, we get 0 with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Append the next digit (6) from the dividend to 21 and continue with: 216 / 126

Let's proceed to step 3:
If we divide 216 by 126, we get 1 and a remainder of 90.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 126 from 216, we get 90.
Fetch the next digit (3) from the dividend, attach it to 90 and continue: 903 / 126

Step 4:
When dividing 903 by 126, we get 7 with a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 17.0
If we subtract 882 from 903, we get 21.
Bring next digit (7) of the dividend behind the 21 and repeat the process: 217 / 126

Moving on to step 5:
When dividing 217 by 126, we get 1 with a remainder of 91.
The number 1 becomes the next digit in our result. 
Result so far: 171.0
Deduct 126 from 217 and we're left with 91.
Include the next digit (2) from the dividend after 91, then repeat: 912 / 126

Let's proceed to step 6:
The number 126 fits into 912 7 times, leaving a remainder of 30.
Use 7 as the next digit of our solution. 
Result so far: 1717.0
If we take 882 away from 912, we end up with 30.
Fetch the next digit (0) from the dividend, attach it to 30 and continue: 300 / 126

On to step 7:
126 goes into 300 2 times with a remainder of 48.
Use 2 as the next digit of our solution. 
Result so far: 17172.0
If we subtract 252 from 300, we get 48.
Include the next digit (2) from the dividend after 48, then repeat: 482 / 126

Going ahead to step 8:
If we divide 482 by 126, we get 3 and a remainder of 104.
Record the quotient 3 as the next digit in the result. 
Result so far: 171723.0
Deduct 378 from 482 and we're left with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 9:
The number 126 fits into 1040 8 times, leaving a remainder of 32.
Put 8 as the next digit of the answer. 
Result so far: 171723.8
Subtract 1008 from 1040 to get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 10:
126 can be fit into 320 2 times, resulting in a remainder of 68.
Write down 2 as next digit of the result. 
Result so far: 171723.82
If we subtract 252 from 320, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

On to step 11:
126 can be fit into 680 5 times, resulting in a remainder of 50.
Record the quotient 5 as the next digit in the result. 
Result so far: 171723.825
If we subtract 630 from 680, we get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 12:
If we divide 500 by 126, we get 3 and a remainder of 122.
Put 3 as the next digit of the answer. 
Result so far: 171723.8253
If we subtract 378 from 500, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 13:
When dividing 1220 by 126, we get 9 with a remainder of 86.
Record the quotient 9 as the next digit in the result. 
Result so far: 171723.82539
If we subtract 1134 from 1220, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Step 14:
If we divide 860 by 126, we get 6 and a remainder of 104.
Use 6 as the next digit of our solution. 
Result so far: 171723.825396
Subtracting 756 from 860 leaves us with 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 15:
126 can be fit into 1040 8 times, resulting in a remainder of 32.
Record the quotient 8 as the next digit in the result. 
Result so far: 171723.8253968
The remainder is 32 after subtracting 1008 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Going ahead to step 16:
The number 126 fits into 320 2 times, leaving a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 171723.82539682
Subtracting 252 from 320 leaves us with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final result is 171723.82539682 with a remainder of 6.8e-08.