We look at the division of 87395927 by 672 
The aim is to understand the frequency of 672 in 87395927.

Step 1:
If we divide 8 by 672, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (7) from the dividend after 8, then repeat: 87 / 672

Going ahead to step 2:
672 can be fit into 87 0 times, resulting in a remainder of 87.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Append the next digit (3) from the dividend to 87 and continue with: 873 / 672

Advancing to step 3:
When dividing 873 by 672, we get 1 with a remainder of 201.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 672 from 873 and we're left with 201.
Include the next digit (9) from the dividend after 201, then repeat: 2019 / 672

Step 4:
672 goes into 2019 3 times with a remainder of 3.
Write down 3 as next digit of the result. 
Result so far: 13.0
Subtract 2016 from 2019 to get 3.
Grab the next digit (5) from the dividend, add it to 3, then carry on: 35 / 672

On to step 5:
672 goes into 35 0 times with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 130.0
If we subtract 0 from 35, we get 35.
Grab the next digit (9) from the dividend, add it to 35, then carry on: 359 / 672

Advancing to step 6:
The number 672 fits into 359 0 times, leaving a remainder of 359.
Write down 0 as next digit of the result. 
Result so far: 1300.0
If we take 0 away from 359, we end up with 359.
Append the next digit (2) from the dividend to 359 and continue with: 3592 / 672

Going ahead to step 7:
When dividing 3592 by 672, we get 5 with a remainder of 232.
Record the quotient 5 as the next digit in the result. 
Result so far: 13005.0
Deduct 3360 from 3592 and we're left with 232.
Append the next digit (7) from the dividend to 232 and continue with: 2327 / 672

Let's proceed to step 8:
The number 672 fits into 2327 3 times, leaving a remainder of 311.
Write down 3 as next digit of the result. 
Result so far: 130053.0
If we take 2016 away from 2327, we end up with 311.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3110, and continue the process.

Going ahead to step 9:
When dividing 3110 by 672, we get 4 with a remainder of 422.
Put 4 as the next digit of the answer. 
Result so far: 130053.4
If we take 2688 away from 3110, we end up with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Moving on to step 10:
4220 divided by 672 is 6 with a remainder of 188.
The next digit of our result is 6. 
Result so far: 130053.46
If we take 4032 away from 4220, we end up with 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

On to step 11:
When dividing 1880 by 672, we get 2 with a remainder of 536.
Write down 2 as next digit of the result. 
Result so far: 130053.462
If we take 1344 away from 1880, we end up with 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 12:
672 goes into 5360 7 times with a remainder of 656.
Write down 7 as next digit of the result. 
Result so far: 130053.4627
Deduct 4704 from 5360 and we're left with 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Going ahead to step 13:
6560 divided by 672 is 9 with a remainder of 512.
The next digit of our result is 9. 
Result so far: 130053.46279
If we take 6048 away from 6560, 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 14:
If we divide 5120 by 672, we get 7 and a remainder of 416.
Put 7 as the next digit of the answer. 
Result so far: 130053.462797
If we take 4704 away from 5120, we end up with 416.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4160, and continue the process.

Advancing to step 15:
672 can be fit into 4160 6 times, resulting in a remainder of 128.
Use 6 as the next digit of our solution. 
Result so far: 130053.4627976
Subtracting 4032 from 4160 leaves us with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 16:
When dividing 1280 by 672, we get 1 with a remainder of 608.
Write down 1 as next digit of the result. 
Result so far: 130053.46279761
Deduct 672 from 1280 and we're left with 608.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6080, and continue the process.

The final outcome is 130053.46279761, with a leftover of 6.08e-07.