637142 divided by 39 
Our goal is to divide 637142 by 39.

On to step 1:
6 divided by 39 is 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 39

On to step 2:
If we divide 63 by 39, we get 1 and a remainder of 24.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 39 from 63 leaves us with 24.
Fetch the next digit (7) from the dividend, attach it to 24 and continue: 247 / 39

Advancing to step 3:
If we divide 247 by 39, we get 6 and a remainder of 13.
Write down 6 as next digit of the result. 
Result so far: 16.0
If we subtract 234 from 247, we get 13.
Bring next digit (1) of the dividend behind the 13 and repeat the process: 131 / 39

On to step 4:
If we divide 131 by 39, we get 3 and a remainder of 14.
Put 3 as the next digit of the answer. 
Result so far: 163.0
If we take 117 away from 131, we end up with 14.
Append the next digit (4) from the dividend to 14 and continue with: 144 / 39

Step 5:
The number 39 fits into 144 3 times, leaving a remainder of 27.
The next digit of our result is 3. 
Result so far: 1633.0
If we take 117 away from 144, we end up with 27.
Include the next digit (2) from the dividend after 27, then repeat: 272 / 39

On to step 6:
If we divide 272 by 39, we get 6 and a remainder of 38.
The next digit of our result is 6. 
Result so far: 16336.0
Subtract 234 from 272 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Moving on to step 7:
39 goes into 380 9 times with a remainder of 29.
Write down 9 as next digit of the result. 
Result so far: 16336.9
If we take 351 away from 380, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

On to step 8:
39 goes into 290 7 times with a remainder of 17.
Put 7 as the next digit of the answer. 
Result so far: 16336.97
Subtract 273 from 290 to 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.

Advancing to step 9:
When dividing 170 by 39, we get 4 with a remainder of 14.
The number 4 becomes the next digit in our result. 
Result so far: 16336.974
The remainder is 14 after subtracting 156 from 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 10:
When dividing 140 by 39, we get 3 with a remainder of 23.
Use 3 as the next digit of our solution. 
Result so far: 16336.9743
The remainder is 23 after subtracting 117 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 11:
39 goes into 230 5 times with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 16336.97435
Subtract 195 from 230 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 12:
39 can be fit into 350 8 times, resulting in a remainder of 38.
The next digit of our result is 8. 
Result so far: 16336.974358
Subtracting 312 from 350 leaves us with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 13:
380 divided by 39 is 9 with a remainder of 29.
Put 9 as the next digit of the answer. 
Result so far: 16336.9743589
The remainder is 29 after subtracting 351 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 14:
The number 39 fits into 290 7 times, leaving a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 16336.97435897
If we subtract 273 from 290, 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.

The final outcome is 16336.97435897, with a leftover of 1.7e-08.