We look at the division of 80103191 by 687 
The aim is to understand the frequency of 687 in 80103191.

Let's proceed to step 1:
687 goes into 8 0 times with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 687

Step 2:
The number 687 fits into 80 0 times, leaving a remainder of 80.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Include the next digit (1) from the dividend after 80, then repeat: 801 / 687

Advancing to step 3:
When dividing 801 by 687, we get 1 with a remainder of 114.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 687 away from 801, we end up with 114.
Append the next digit (0) from the dividend to 114 and continue with: 1140 / 687

Step 4:
The number 687 fits into 1140 1 times, leaving a remainder of 453.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 687 from 1140 to get 453.
Include the next digit (3) from the dividend after 453, then repeat: 4533 / 687

Let's proceed to step 5:
When dividing 4533 by 687, we get 6 with a remainder of 411.
The next digit of our result is 6. 
Result so far: 116.0
If we take 4122 away from 4533, we end up with 411.
Grab the next digit (1) from the dividend, add it to 411, then carry on: 4111 / 687

On to step 6:
The number 687 fits into 4111 5 times, leaving a remainder of 676.
Put 5 as the next digit of the answer. 
Result so far: 1165.0
If we subtract 3435 from 4111, we get 676.
Append the next digit (9) from the dividend to 676 and continue with: 6769 / 687

Advancing to step 7:
The number 687 fits into 6769 9 times, leaving a remainder of 586.
Record the quotient 9 as the next digit in the result. 
Result so far: 11659.0
If we take 6183 away from 6769, we end up with 586.
Grab the next digit (1) from the dividend, add it to 586, then carry on: 5861 / 687

Moving on to step 8:
If we divide 5861 by 687, we get 8 and a remainder of 365.
Record the quotient 8 as the next digit in the result. 
Result so far: 116598.0
If we subtract 5496 from 5861, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Going ahead to step 9:
3650 divided by 687 is 5 with a remainder of 215.
The number 5 becomes the next digit in our result. 
Result so far: 116598.5
Subtract 3435 from 3650 to get 215.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2150, and continue the process.

Going ahead to step 10:
2150 divided by 687 is 3 with a remainder of 89.
Use 3 as the next digit of our solution. 
Result so far: 116598.53
If we take 2061 away from 2150, we end up with 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Let's proceed to step 11:
When dividing 890 by 687, we get 1 with a remainder of 203.
The number 1 becomes the next digit in our result. 
Result so far: 116598.531
If we subtract 687 from 890, we get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Going ahead to step 12:
If we divide 2030 by 687, we get 2 and a remainder of 656.
The next digit of our result is 2. 
Result so far: 116598.5312
If we subtract 1374 from 2030, we get 656.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6560, and continue the process.

Advancing to step 13:
687 goes into 6560 9 times with a remainder of 377.
Use 9 as the next digit of our solution. 
Result so far: 116598.53129
If we take 6183 away from 6560, we end up with 377.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Let's proceed to step 14:
687 goes into 3770 5 times with a remainder of 335.
The number 5 becomes the next digit in our result. 
Result so far: 116598.531295
If we take 3435 away from 3770, we end up with 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 15:
687 can be fit into 3350 4 times, resulting in a remainder of 602.
Put 4 as the next digit of the answer. 
Result so far: 116598.5312954
Subtracting 2748 from 3350 leaves us with 602.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6020, and continue the process.

Going ahead to step 16:
6020 divided by 687 is 8 with a remainder of 524.
Write down 8 as next digit of the result. 
Result so far: 116598.53129548
If we take 5496 away from 6020, we end up with 524.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5240, and continue the process.

The final outcome is 116598.53129548, with a leftover of 5.24e-07.