We divide 657091 by 39
We want to figure out the number of times 657091 can be divided by 39.

Going ahead to step 1:
If we divide 6 by 39, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (5) from the dividend, attach it to 6 and continue: 65 / 39

Moving on to step 2:
39 can be fit into 65 1 times, resulting in a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 39 from 65 and we're left with 26.
Take the next digit (7) from the dividend and append it to 26, then repeat: 267 / 39

Step 3:
If we divide 267 by 39, we get 6 and a remainder of 33.
Put 6 as the next digit of the answer. 
Result so far: 16.0
The remainder is 33 after subtracting 234 from 267.
Fetch the next digit (0) from the dividend, attach it to 33 and continue: 330 / 39

Step 4:
The number 39 fits into 330 8 times, leaving a remainder of 18.
Put 8 as the next digit of the answer. 
Result so far: 168.0
Deduct 312 from 330 and we're left with 18.
Fetch the next digit (9) from the dividend, attach it to 18 and continue: 189 / 39

Step 5:
If we divide 189 by 39, we get 4 and a remainder of 33.
Use 4 as the next digit of our solution. 
Result so far: 1684.0
If we subtract 156 from 189, we get 33.
Take the next digit (1) from the dividend and append it to 33, then repeat: 331 / 39

Step 6:
39 can be fit into 331 8 times, resulting in a remainder of 19.
Use 8 as the next digit of our solution. 
Result so far: 16848.0
If we subtract 312 from 331, we 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 7:
If we divide 190 by 39, we get 4 and a remainder of 34.
Record the quotient 4 as the next digit in the result. 
Result so far: 16848.4
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.

Advancing to step 8:
39 goes into 340 8 times with a remainder of 28.
The number 8 becomes the next digit in our result. 
Result so far: 16848.48
Subtract 312 from 340 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 9:
The number 39 fits into 280 7 times, leaving a remainder of 7.
Put 7 as the next digit of the answer. 
Result so far: 16848.487
Subtract 273 from 280 to 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.

Moving on to step 10:
The number 39 fits into 70 1 times, leaving a remainder of 31.
The next digit of our result is 1. 
Result so far: 16848.4871
Subtracting 39 from 70 leaves us with 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 11:
If we divide 310 by 39, we get 7 and a remainder of 37.
Write down 7 as next digit of the result. 
Result so far: 16848.48717
If we take 273 away from 310, we end up 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.

Step 12:
39 goes into 370 9 times with a remainder of 19.
Put 9 as the next digit of the answer. 
Result so far: 16848.487179
If we subtract 351 from 370, we 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.

On to step 13:
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: 16848.4871794
If we take 156 away from 190, we end up 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.

Step 14:
39 goes into 340 8 times with a remainder of 28.
The next digit of our result is 8. 
Result so far: 16848.48717948
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.

The final outcome is 16848.48717948, with a leftover of 2.8e-08.