We look at the division of 420349 by 39 
We're looking to find how many times 39 goes into 420349.

Moving on to step 1:
When dividing 4 by 39, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 39

Step 2:
When dividing 42 by 39, we get 1 with a remainder of 3.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 39 from 42 and we're left with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 39

On to step 3:
If we divide 30 by 39, we get 0 and a remainder of 30.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtracting 0 from 30 leaves us with 30.
Bring next digit (3) of the dividend behind the 30 and repeat the process: 303 / 39

Let's proceed to step 4:
39 can be fit into 303 7 times, resulting in a remainder of 30.
Put 7 as the next digit of the answer. 
Result so far: 107.0
If we take 273 away from 303, we end up with 30.
Take the next digit (4) from the dividend and append it to 30, then repeat: 304 / 39

Going ahead to step 5:
39 goes into 304 7 times with a remainder of 31.
Write down 7 as next digit of the result. 
Result so far: 1077.0
If we subtract 273 from 304, we get 31.
Append the next digit (9) from the dividend to 31 and continue with: 319 / 39

Let's proceed to step 6:
39 goes into 319 8 times with a remainder of 7.
Put 8 as the next digit of the answer. 
Result so far: 10778.0
The remainder is 7 after subtracting 312 from 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 7:
If we divide 70 by 39, we get 1 and a remainder of 31.
Put 1 as the next digit of the answer. 
Result so far: 10778.1
Subtract 39 from 70 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 8:
If we divide 310 by 39, we get 7 and a remainder of 37.
The next digit of our result is 7. 
Result so far: 10778.17
If we subtract 273 from 310, we get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Advancing to step 9:
370 divided by 39 is 9 with a remainder of 19.
The next digit of our result is 9. 
Result so far: 10778.179
Subtract 351 from 370 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Moving on to step 10:
39 goes into 190 4 times with a remainder of 34.
The next digit of our result is 4. 
Result so far: 10778.1794
Deduct 156 from 190 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
340 divided by 39 is 8 with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 10778.17948
Deduct 312 from 340 and we're left with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 12:
If we divide 280 by 39, we get 7 and a remainder of 7.
The number 7 becomes the next digit in our result. 
Result so far: 10778.179487
If we subtract 273 from 280, we get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Step 13:
39 can be fit into 70 1 times, resulting in a remainder of 31.
The next digit of our result is 1. 
Result so far: 10778.1794871
The remainder is 31 after subtracting 39 from 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 14:
310 divided by 39 is 7 with a remainder of 37.
The number 7 becomes the next digit in our result. 
Result so far: 10778.17948717
Subtracting 273 from 310 leaves us with 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

After the division, we end up with 10778.17948717 and a remainder of 3.7e-08.