We look at the division of 80136188 by 87 
The aim is to understand the frequency of 87 in 80136188.

Advancing to step 1:
8 divided by 87 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Include the next digit (0) from the dividend after 8, then repeat: 80 / 87

Step 2:
The number 87 fits into 80 0 times, leaving a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Take the next digit (1) from the dividend and append it to 80, then repeat: 801 / 87

Let's proceed to step 3:
If we divide 801 by 87, we get 9 and a remainder of 18.
Use 9 as the next digit of our solution. 
Result so far: 9.0
Deduct 783 from 801 and we're left with 18.
Append the next digit (3) from the dividend to 18 and continue with: 183 / 87

Moving on to step 4:
87 goes into 183 2 times with a remainder of 9.
Record the quotient 2 as the next digit in the result. 
Result so far: 92.0
Subtracting 174 from 183 leaves us with 9.
Take the next digit (6) from the dividend and append it to 9, then repeat: 96 / 87

Going ahead to step 5:
The number 87 fits into 96 1 times, leaving a remainder of 9.
Put 1 as the next digit of the answer. 
Result so far: 921.0
If we subtract 87 from 96, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 87

Going ahead to step 6:
If we divide 91 by 87, we get 1 and a remainder of 4.
Write down 1 as next digit of the result. 
Result so far: 9211.0
If we subtract 87 from 91, we get 4.
Take the next digit (8) from the dividend and append it to 4, then repeat: 48 / 87

On to step 7:
48 divided by 87 is 0 with a remainder of 48.
Use 0 as the next digit of our solution. 
Result so far: 92110.0
If we take 0 away from 48, we end up with 48.
Append the next digit (8) from the dividend to 48 and continue with: 488 / 87

Going ahead to step 8:
The number 87 fits into 488 5 times, leaving a remainder of 53.
Use 5 as the next digit of our solution. 
Result so far: 921105.0
Deduct 435 from 488 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 9:
If we divide 530 by 87, we get 6 and a remainder of 8.
The next digit of our result is 6. 
Result so far: 921105.6
Deduct 522 from 530 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 10:
When dividing 80 by 87, we get 0 with a remainder of 80.
The number 0 becomes the next digit in our result. 
Result so far: 921105.6
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 11:
87 can be fit into 800 9 times, resulting in a remainder of 17.
Use 9 as the next digit of our solution. 
Result so far: 921105.609
Subtracting 783 from 800 leaves us with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Advancing to step 12:
When dividing 170 by 87, we get 1 with a remainder of 83.
The number 1 becomes the next digit in our result. 
Result so far: 921105.6091
If we subtract 87 from 170, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

Advancing to step 13:
87 goes into 830 9 times with a remainder of 47.
Put 9 as the next digit of the answer. 
Result so far: 921105.60919
Deduct 783 from 830 and we're left with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Step 14:
87 goes into 470 5 times with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 921105.609195
Subtract 435 from 470 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 15:
87 goes into 350 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 921105.6091954
If we subtract 348 from 350, we get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Let's proceed to step 16:
When dividing 20 by 87, we get 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 921105.6091954
Subtract 0 from 20 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

The quotient of the division is 921105.6091954, and the remainder is 2e-08.