We're dividing 21031336 by 126 
We're looking to find how many times 126 goes into 21031336.

Going ahead to step 1:
If we divide 2 by 126, we get 0 and 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.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 126

Advancing to step 2:
When dividing 21 by 126, we get 0 with a remainder of 21.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Include the next digit (0) from the dividend after 21, then repeat: 210 / 126

Going ahead to step 3:
When dividing 210 by 126, we get 1 with a remainder of 84.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 84 after subtracting 126 from 210.
Append the next digit (3) from the dividend to 84 and continue with: 843 / 126

Step 4:
126 can be fit into 843 6 times, resulting in a remainder of 87.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we take 756 away from 843, we end up with 87.
Bring next digit (1) of the dividend behind the 87 and repeat the process: 871 / 126

Going ahead to step 5:
871 divided by 126 is 6 with a remainder of 115.
Write down 6 as next digit of the result. 
Result so far: 166.0
If we take 756 away from 871, we end up with 115.
Grab the next digit (3) from the dividend, add it to 115, then carry on: 1153 / 126

On to step 6:
When dividing 1153 by 126, we get 9 with a remainder of 19.
The next digit of our result is 9. 
Result so far: 1669.0
If we subtract 1134 from 1153, we get 19.
Bring next digit (3) of the dividend behind the 19 and repeat the process: 193 / 126

Let's proceed to step 7:
193 divided by 126 is 1 with a remainder of 67.
The next digit of our result is 1. 
Result so far: 16691.0
Subtract 126 from 193 to get 67.
Append the next digit (6) from the dividend to 67 and continue with: 676 / 126

Moving on to step 8:
When dividing 676 by 126, we get 5 with a remainder of 46.
Put 5 as the next digit of the answer. 
Result so far: 166915.0
Subtracting 630 from 676 leaves us with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 9:
The number 126 fits into 460 3 times, leaving a remainder of 82.
The number 3 becomes the next digit in our result. 
Result so far: 166915.3
The remainder is 82 after subtracting 378 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 10:
126 goes into 820 6 times with a remainder of 64.
The number 6 becomes the next digit in our result. 
Result so far: 166915.36
If we subtract 756 from 820, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 11:
126 goes into 640 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 166915.365
Deduct 630 from 640 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 12:
126 can be fit into 100 0 times, resulting in a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 166915.365
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 13:
The number 126 fits into 1000 7 times, leaving a remainder of 118.
Use 7 as the next digit of our solution. 
Result so far: 166915.36507
If we take 882 away from 1000, we end up with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Step 14:
The number 126 fits into 1180 9 times, leaving a remainder of 46.
The next digit of our result is 9. 
Result so far: 166915.365079
Subtract 1134 from 1180 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 15:
126 can be fit into 460 3 times, resulting in a remainder of 82.
Record the quotient 3 as the next digit in the result. 
Result so far: 166915.3650793
If we take 378 away from 460, we end up with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Going ahead to step 16:
126 goes into 820 6 times with a remainder of 64.
The next digit of our result is 6. 
Result so far: 166915.36507936
Subtracting 756 from 820 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Our division results in 166915.36507936 with a remaining 6.4e-08.