We're dividing 80979428 by 87 
The aim is to understand the frequency of 87 in 80979428.

Going ahead to step 1:
When dividing 8 by 87, we get 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 87

On to 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
The remainder is 80 after subtracting 0 from 80.
Take the next digit (9) from the dividend and append it to 80, then repeat: 809 / 87

Going ahead to step 3:
809 divided by 87 is 9 with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 9.0
If we subtract 783 from 809, we get 26.
Grab the next digit (7) from the dividend, add it to 26, then carry on: 267 / 87

Step 4:
87 goes into 267 3 times with a remainder of 6.
The number 3 becomes the next digit in our result. 
Result so far: 93.0
Deduct 261 from 267 and we're left with 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 87

Let's proceed to step 5:
When dividing 69 by 87, we get 0 with a remainder of 69.
Put 0 as the next digit of the answer. 
Result so far: 930.0
If we take 0 away from 69, we end up with 69.
Append the next digit (4) from the dividend to 69 and continue with: 694 / 87

Advancing to step 6:
694 divided by 87 is 7 with a remainder of 85.
Use 7 as the next digit of our solution. 
Result so far: 9307.0
If we take 609 away from 694, we end up with 85.
Fetch the next digit (2) from the dividend, attach it to 85 and continue: 852 / 87

Let's proceed to step 7:
The number 87 fits into 852 9 times, leaving a remainder of 69.
Put 9 as the next digit of the answer. 
Result so far: 93079.0
If we subtract 783 from 852, we get 69.
Fetch the next digit (8) from the dividend, attach it to 69 and continue: 698 / 87

Let's proceed to step 8:
If we divide 698 by 87, we get 8 and a remainder of 2.
The number 8 becomes the next digit in our result. 
Result so far: 930798.0
If we subtract 696 from 698, 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.

Going ahead to step 9:
The number 87 fits into 20 0 times, leaving a remainder of 20.
Put 0 as the next digit of the answer. 
Result so far: 930798.0
If we take 0 away from 20, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 10:
200 divided by 87 is 2 with a remainder of 26.
Write down 2 as next digit of the result. 
Result so far: 930798.02
The remainder is 26 after subtracting 174 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 11:
260 divided by 87 is 2 with a remainder of 86.
The next digit of our result is 2. 
Result so far: 930798.022
If we subtract 174 from 260, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

The quotient of the division is 930798.022, and the remainder is 0.0086.