13079100 ÷ 421 
We want to divide 13079100 by 421.

Let's proceed to step 1:
If we divide 1 by 421, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 421

Going ahead to step 2:
When dividing 13 by 421, we get 0 with a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Include the next digit (0) from the dividend after 13, then repeat: 130 / 421

Advancing to step 3:
130 divided by 421 is 0 with a remainder of 130.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 130 to get 130.
Include the next digit (7) from the dividend after 130, then repeat: 1307 / 421

Step 4:
421 goes into 1307 3 times with a remainder of 44.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 1263 from 1307 to get 44.
Fetch the next digit (9) from the dividend, attach it to 44 and continue: 449 / 421

Going ahead to step 5:
If we divide 449 by 421, we get 1 and a remainder of 28.
Put 1 as the next digit of the answer. 
Result so far: 31.0
Subtract 421 from 449 to get 28.
Grab the next digit (1) from the dividend, add it to 28, then carry on: 281 / 421

Let's proceed to step 6:
When dividing 281 by 421, we get 0 with a remainder of 281.
Put 0 as the next digit of the answer. 
Result so far: 310.0
Subtracting 0 from 281 leaves us with 281.
Grab the next digit (0) from the dividend, add it to 281, then carry on: 2810 / 421

Going ahead to step 7:
421 goes into 2810 6 times with a remainder of 284.
Use 6 as the next digit of our solution. 
Result so far: 3106.0
If we take 2526 away from 2810, we end up with 284.
Bring next digit (0) of the dividend behind the 284 and repeat the process: 2840 / 421

Moving on to step 8:
2840 divided by 421 is 6 with a remainder of 314.
Write down 6 as next digit of the result. 
Result so far: 31066.0
The remainder is 314 after subtracting 2526 from 2840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3140, and continue the process.

Let's proceed to step 9:
421 goes into 3140 7 times with a remainder of 193.
Record the quotient 7 as the next digit in the result. 
Result so far: 31066.7
Deduct 2947 from 3140 and we're left with 193.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Moving on to step 10:
421 can be fit into 1930 4 times, resulting in a remainder of 246.
Use 4 as the next digit of our solution. 
Result so far: 31066.74
The remainder is 246 after subtracting 1684 from 1930.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Let's proceed to step 11:
If we divide 2460 by 421, we get 5 and a remainder of 355.
The number 5 becomes the next digit in our result. 
Result so far: 31066.745
Subtracting 2105 from 2460 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

On to step 12:
The number 421 fits into 3550 8 times, leaving a remainder of 182.
The number 8 becomes the next digit in our result. 
Result so far: 31066.7458
Subtracting 3368 from 3550 leaves us with 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

Going ahead to step 13:
The number 421 fits into 1820 4 times, leaving a remainder of 136.
The number 4 becomes the next digit in our result. 
Result so far: 31066.74584
Subtracting 1684 from 1820 leaves us with 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Advancing to step 14:
The number 421 fits into 1360 3 times, leaving a remainder of 97.
Record the quotient 3 as the next digit in the result. 
Result so far: 31066.745843
If we take 1263 away from 1360, we end up with 97.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

On to step 15:
421 can be fit into 970 2 times, resulting in a remainder of 128.
Record the quotient 2 as the next digit in the result. 
Result so far: 31066.7458432
If we subtract 842 from 970, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 16:
421 goes into 1280 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 31066.74584323
If we subtract 1263 from 1280, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

After the division, we end up with 31066.74584323 and a remainder of 1.7e-08.