99757887 ÷ 671 
The aim is to understand the frequency of 671 in 99757887.

Step 1:
The number 671 fits into 9 0 times, leaving a remainder of 9.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 9 and we're left with 9.
Grab the next digit (9) from the dividend, add it to 9, then carry on: 99 / 671

Step 2:
671 can be fit into 99 0 times, resulting in a remainder of 99.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 99, we get 99.
Grab the next digit (7) from the dividend, add it to 99, then carry on: 997 / 671

Advancing to step 3:
671 can be fit into 997 1 times, resulting in a remainder of 326.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 671 from 997 to get 326.
Fetch the next digit (5) from the dividend, attach it to 326 and continue: 3265 / 671

Going ahead to step 4:
3265 divided by 671 is 4 with a remainder of 581.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
Deduct 2684 from 3265 and we're left with 581.
Include the next digit (7) from the dividend after 581, then repeat: 5817 / 671

Going ahead to step 5:
The number 671 fits into 5817 8 times, leaving a remainder of 449.
The number 8 becomes the next digit in our result. 
Result so far: 148.0
Subtract 5368 from 5817 to get 449.
Bring next digit (8) of the dividend behind the 449 and repeat the process: 4498 / 671

Moving on to step 6:
The number 671 fits into 4498 6 times, leaving a remainder of 472.
Use 6 as the next digit of our solution. 
Result so far: 1486.0
If we take 4026 away from 4498, we end up with 472.
Take the next digit (8) from the dividend and append it to 472, then repeat: 4728 / 671

Let's proceed to step 7:
If we divide 4728 by 671, we get 7 and a remainder of 31.
The number 7 becomes the next digit in our result. 
Result so far: 14867.0
The remainder is 31 after subtracting 4697 from 4728.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 671

On to step 8:
671 goes into 317 0 times with a remainder of 317.
Use 0 as the next digit of our solution. 
Result so far: 148670.0
Deduct 0 from 317 and we're left with 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Step 9:
3170 divided by 671 is 4 with a remainder of 486.
Put 4 as the next digit of the answer. 
Result so far: 148670.4
If we take 2684 away from 3170, we end up with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

Moving on to step 10:
When dividing 4860 by 671, we get 7 with a remainder of 163.
Put 7 as the next digit of the answer. 
Result so far: 148670.47
If we take 4697 away from 4860, we end up with 163.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

On to step 11:
The number 671 fits into 1630 2 times, leaving a remainder of 288.
Record the quotient 2 as the next digit in the result. 
Result so far: 148670.472
Subtracting 1342 from 1630 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

On to step 12:
671 goes into 2880 4 times with a remainder of 196.
Write down 4 as next digit of the result. 
Result so far: 148670.4724
Subtract 2684 from 2880 to get 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

Step 13:
If we divide 1960 by 671, we get 2 and a remainder of 618.
Use 2 as the next digit of our solution. 
Result so far: 148670.47242
If we subtract 1342 from 1960, we get 618.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6180, and continue the process.

Step 14:
When dividing 6180 by 671, we get 9 with a remainder of 141.
Put 9 as the next digit of the answer. 
Result so far: 148670.472429
If we take 6039 away from 6180, we end up with 141.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1410, and continue the process.

Advancing to step 15:
The number 671 fits into 1410 2 times, leaving a remainder of 68.
Use 2 as the next digit of our solution. 
Result so far: 148670.4724292
If we take 1342 away from 1410, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 16:
671 goes into 680 1 times with a remainder of 9.
The next digit of our result is 1. 
Result so far: 148670.47242921
If we take 671 away from 680, we end up with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

In conclusion, the division gives 148670.47242921 with a balance of 9e-09.