86749649 ÷ 873 
The aim is to understand the frequency of 873 in 86749649.

Moving on to step 1:
When dividing 8 by 873, we get 0 with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 873

Step 2:
86 divided by 873 is 0 with a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (7) from the dividend after 86, then repeat: 867 / 873

Moving on to step 3:
873 goes into 867 0 times with a remainder of 867.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 867 and we're left with 867.
Include the next digit (4) from the dividend after 867, then repeat: 8674 / 873

Step 4:
873 goes into 8674 9 times with a remainder of 817.
Write down 9 as next digit of the result. 
Result so far: 9.0
Deduct 7857 from 8674 and we're left with 817.
Fetch the next digit (9) from the dividend, attach it to 817 and continue: 8179 / 873

Step 5:
8179 divided by 873 is 9 with a remainder of 322.
Write down 9 as next digit of the result. 
Result so far: 99.0
If we subtract 7857 from 8179, we get 322.
Bring next digit (6) of the dividend behind the 322 and repeat the process: 3226 / 873

Advancing to step 6:
873 goes into 3226 3 times with a remainder of 607.
Put 3 as the next digit of the answer. 
Result so far: 993.0
If we take 2619 away from 3226, we end up with 607.
Grab the next digit (4) from the dividend, add it to 607, then carry on: 6074 / 873

Going ahead to step 7:
6074 divided by 873 is 6 with a remainder of 836.
Put 6 as the next digit of the answer. 
Result so far: 9936.0
Subtract 5238 from 6074 to get 836.
Fetch the next digit (9) from the dividend, attach it to 836 and continue: 8369 / 873

On to step 8:
873 can be fit into 8369 9 times, resulting in a remainder of 512.
Record the quotient 9 as the next digit in the result. 
Result so far: 99369.0
If we take 7857 away from 8369, we end up with 512.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5120, and continue the process.

Moving on to step 9:
873 can be fit into 5120 5 times, resulting in a remainder of 755.
Use 5 as the next digit of our solution. 
Result so far: 99369.5
Subtract 4365 from 5120 to get 755.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7550, and continue the process.

Advancing to step 10:
873 can be fit into 7550 8 times, resulting in a remainder of 566.
The number 8 becomes the next digit in our result. 
Result so far: 99369.58
Deduct 6984 from 7550 and we're left with 566.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5660, and continue the process.

Advancing to step 11:
When dividing 5660 by 873, we get 6 with a remainder of 422.
The next digit of our result is 6. 
Result so far: 99369.586
The remainder is 422 after subtracting 5238 from 5660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Going ahead to step 12:
The number 873 fits into 4220 4 times, leaving a remainder of 728.
Record the quotient 4 as the next digit in the result. 
Result so far: 99369.5864
If we take 3492 away from 4220, we end up with 728.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7280, and continue the process.

Advancing to step 13:
When dividing 7280 by 873, we get 8 with a remainder of 296.
Put 8 as the next digit of the answer. 
Result so far: 99369.58648
Subtract 6984 from 7280 to get 296.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2960, and continue the process.

On to step 14:
The number 873 fits into 2960 3 times, leaving a remainder of 341.
Put 3 as the next digit of the answer. 
Result so far: 99369.586483
The remainder is 341 after subtracting 2619 from 2960.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Let's proceed to step 15:
873 goes into 3410 3 times with a remainder of 791.
Write down 3 as next digit of the result. 
Result so far: 99369.5864833
If we take 2619 away from 3410, we end up with 791.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7910, and continue the process.

In conclusion, the division gives 99369.5864833 with a balance of 7.91e-06.