We look at the division of 423577 by 39 
We want to divide 423577 by 39.

Going ahead to step 1:
39 can be fit into 4 0 times, resulting in a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 39

Advancing to step 2:
39 goes into 42 1 times with a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 39 from 42 leaves us with 3.
Append the next digit (3) from the dividend to 3 and continue with: 33 / 39

On to step 3:
If we divide 33 by 39, we get 0 and a remainder of 33.
Put 0 as the next digit of the answer. 
Result so far: 10.0
The remainder is 33 after subtracting 0 from 33.
Fetch the next digit (5) from the dividend, attach it to 33 and continue: 335 / 39

Moving on to step 4:
If we divide 335 by 39, we get 8 and a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 108.0
If we subtract 312 from 335, we get 23.
Take the next digit (7) from the dividend and append it to 23, then repeat: 237 / 39

Moving on to step 5:
39 goes into 237 6 times with a remainder of 3.
Record the quotient 6 as the next digit in the result. 
Result so far: 1086.0
If we take 234 away from 237, we end up with 3.
Append the next digit (7) from the dividend to 3 and continue with: 37 / 39

Let's proceed to step 6:
39 goes into 37 0 times with a remainder of 37.
Put 0 as the next digit of the answer. 
Result so far: 10860.0
The remainder is 37 after subtracting 0 from 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

On to step 7:
39 can be fit into 370 9 times, resulting in a remainder of 19.
Use 9 as the next digit of our solution. 
Result so far: 10860.9
Subtracting 351 from 370 leaves us with 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Advancing to step 8:
When dividing 190 by 39, we get 4 with a remainder of 34.
The next digit of our result is 4. 
Result so far: 10860.94
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.

Advancing to step 9:
340 divided by 39 is 8 with a remainder of 28.
Use 8 as the next digit of our solution. 
Result so far: 10860.948
Subtracting 312 from 340 leaves us 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 10:
39 can be fit into 280 7 times, resulting in a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 10860.9487
The remainder is 7 after subtracting 273 from 280.
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 11:
70 divided by 39 is 1 with a remainder of 31.
Put 1 as the next digit of the answer. 
Result so far: 10860.94871
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.

Moving on to step 12:
The number 39 fits into 310 7 times, leaving a remainder of 37.
Record the quotient 7 as the next digit in the result. 
Result so far: 10860.948717
Subtract 273 from 310 to 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.

Going ahead to step 13:
When dividing 370 by 39, we get 9 with a remainder of 19.
The next digit of our result is 9. 
Result so far: 10860.9487179
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.

Advancing to step 14:
39 goes into 190 4 times with a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 10860.94871794
Subtract 156 from 190 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

After the division, we end up with 10860.94871794 and a remainder of 3.4e-08.