80879057 ÷ 87 
The aim is to understand the frequency of 87 in 80879057.

Advancing to step 1:
The number 87 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 87

Moving on to step 2:
If we divide 80 by 87, we get 0 and a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 80, we get 80.
Take the next digit (8) from the dividend and append it to 80, then repeat: 808 / 87

Going ahead to step 3:
If we divide 808 by 87, we get 9 and a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
The remainder is 25 after subtracting 783 from 808.
Take the next digit (7) from the dividend and append it to 25, then repeat: 257 / 87

Moving on to step 4:
87 can be fit into 257 2 times, resulting in a remainder of 83.
The number 2 becomes the next digit in our result. 
Result so far: 92.0
Deduct 174 from 257 and we're left with 83.
Fetch the next digit (9) from the dividend, attach it to 83 and continue: 839 / 87

Going ahead to step 5:
When dividing 839 by 87, we get 9 with a remainder of 56.
Write down 9 as next digit of the result. 
Result so far: 929.0
The remainder is 56 after subtracting 783 from 839.
Grab the next digit (0) from the dividend, add it to 56, then carry on: 560 / 87

On to step 6:
87 goes into 560 6 times with a remainder of 38.
The next digit of our result is 6. 
Result so far: 9296.0
Deduct 522 from 560 and we're left with 38.
Include the next digit (5) from the dividend after 38, then repeat: 385 / 87

Advancing to step 7:
87 can be fit into 385 4 times, resulting in a remainder of 37.
Write down 4 as next digit of the result. 
Result so far: 92964.0
If we subtract 348 from 385, we get 37.
Include the next digit (7) from the dividend after 37, then repeat: 377 / 87

On to step 8:
If we divide 377 by 87, we get 4 and a remainder of 29.
Write down 4 as next digit of the result. 
Result so far: 929644.0
Deduct 348 from 377 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 9:
290 divided by 87 is 3 with a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 929644.3
Deduct 261 from 290 and we're left with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Let's proceed to step 10:
If we divide 290 by 87, we get 3 and a remainder of 29.
The number 3 becomes the next digit in our result. 
Result so far: 929644.33
Subtracting 261 from 290 leaves us with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Our division results in 929644.33 with a remaining 0.029.