We look at the division of 814687 by 87 
The aim is to understand the frequency of 87 in 814687.

Advancing to step 1:
If we divide 8 by 87, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (1) from the dividend after 8, then repeat: 81 / 87

Moving on to step 2:
87 goes into 81 0 times with a remainder of 81.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Grab the next digit (4) from the dividend, add it to 81, then carry on: 814 / 87

Advancing to step 3:
87 can be fit into 814 9 times, resulting in a remainder of 31.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
Subtracting 783 from 814 leaves us with 31.
Bring next digit (6) of the dividend behind the 31 and repeat the process: 316 / 87

Moving on to step 4:
87 goes into 316 3 times with a remainder of 55.
Write down 3 as next digit of the result. 
Result so far: 93.0
If we subtract 261 from 316, we get 55.
Append the next digit (8) from the dividend to 55 and continue with: 558 / 87

Moving on to step 5:
87 goes into 558 6 times with a remainder of 36.
Record the quotient 6 as the next digit in the result. 
Result so far: 936.0
Subtract 522 from 558 to get 36.
Fetch the next digit (7) from the dividend, attach it to 36 and continue: 367 / 87

On to step 6:
87 goes into 367 4 times with a remainder of 19.
Put 4 as the next digit of the answer. 
Result so far: 9364.0
Subtract 348 from 367 to get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Going ahead to step 7:
87 can be fit into 190 2 times, resulting in a remainder of 16.
Put 2 as the next digit of the answer. 
Result so far: 9364.2
Subtract 174 from 190 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 8:
If we divide 160 by 87, we get 1 and a remainder of 73.
Write down 1 as next digit of the result. 
Result so far: 9364.21
Subtract 87 from 160 to get 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Let's proceed to step 9:
When dividing 730 by 87, we get 8 with a remainder of 34.
Use 8 as the next digit of our solution. 
Result so far: 9364.218
Subtract 696 from 730 to get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 10:
87 goes into 340 3 times with a remainder of 79.
Put 3 as the next digit of the answer. 
Result so far: 9364.2183
If we subtract 261 from 340, we get 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Moving on to step 11:
The number 87 fits into 790 9 times, leaving a remainder of 7.
Record the quotient 9 as the next digit in the result. 
Result so far: 9364.21839
Subtracting 783 from 790 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Advancing to step 12:
If we divide 70 by 87, we get 0 and a remainder of 70.
Write down 0 as next digit of the result. 
Result so far: 9364.21839
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 13:
The number 87 fits into 700 8 times, leaving a remainder of 4.
Put 8 as the next digit of the answer. 
Result so far: 9364.2183908
Deduct 696 from 700 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 14:
87 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 9364.2183908
Subtracting 0 from 40 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The quotient of the division is 9364.2183908, and the remainder is 4e-08.