12973865 ÷ 687 
The aim is to understand the frequency of 687 in 12973865.

On to step 1:
When dividing 1 by 687, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 687

Advancing to step 2:
If we divide 12 by 687, we get 0 and a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Append the next digit (9) from the dividend to 12 and continue with: 129 / 687

Step 3:
129 divided by 687 is 0 with a remainder of 129.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 129, we get 129.
Take the next digit (7) from the dividend and append it to 129, then repeat: 1297 / 687

Moving on to step 4:
687 goes into 1297 1 times with a remainder of 610.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 687 from 1297 to get 610.
Grab the next digit (3) from the dividend, add it to 610, then carry on: 6103 / 687

Advancing to step 5:
When dividing 6103 by 687, we get 8 with a remainder of 607.
Put 8 as the next digit of the answer. 
Result so far: 18.0
If we take 5496 away from 6103, we end up with 607.
Take the next digit (8) from the dividend and append it to 607, then repeat: 6078 / 687

Going ahead to step 6:
The number 687 fits into 6078 8 times, leaving a remainder of 582.
Record the quotient 8 as the next digit in the result. 
Result so far: 188.0
Subtract 5496 from 6078 to get 582.
Grab the next digit (6) from the dividend, add it to 582, then carry on: 5826 / 687

Moving on to step 7:
687 can be fit into 5826 8 times, resulting in a remainder of 330.
The next digit of our result is 8. 
Result so far: 1888.0
If we take 5496 away from 5826, we end up with 330.
Include the next digit (5) from the dividend after 330, then repeat: 3305 / 687

Going ahead to step 8:
When dividing 3305 by 687, we get 4 with a remainder of 557.
The number 4 becomes the next digit in our result. 
Result so far: 18884.0
Deduct 2748 from 3305 and we're left with 557.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5570, and continue the process.

Going ahead to step 9:
5570 divided by 687 is 8 with a remainder of 74.
Record the quotient 8 as the next digit in the result. 
Result so far: 18884.8
Subtract 5496 from 5570 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Step 10:
740 divided by 687 is 1 with a remainder of 53.
Record the quotient 1 as the next digit in the result. 
Result so far: 18884.81
If we subtract 687 from 740, we get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 11:
530 divided by 687 is 0 with a remainder of 530.
The number 0 becomes the next digit in our result. 
Result so far: 18884.81
Deduct 0 from 530 and we're left with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 12:
687 goes into 5300 7 times with a remainder of 491.
The number 7 becomes the next digit in our result. 
Result so far: 18884.8107
If we take 4809 away from 5300, we end up with 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Step 13:
4910 divided by 687 is 7 with a remainder of 101.
Use 7 as the next digit of our solution. 
Result so far: 18884.81077
Subtracting 4809 from 4910 leaves us with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

The final result is 18884.81077 with a remainder of 0.000101.