80210885 divided by 115 
The aim is to understand the frequency of 115 in 80210885.

On to step 1:
When dividing 8 by 115, we get 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Append the next digit (0) from the dividend to 8 and continue with: 80 / 115

Step 2:
The number 115 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 subtract 0 from 80, we get 80.
Fetch the next digit (2) from the dividend, attach it to 80 and continue: 802 / 115

Moving on to step 3:
115 goes into 802 6 times with a remainder of 112.
Record the quotient 6 as the next digit in the result. 
Result so far: 6.0
The remainder is 112 after subtracting 690 from 802.
Grab the next digit (1) from the dividend, add it to 112, then carry on: 1121 / 115

Step 4:
The number 115 fits into 1121 9 times, leaving a remainder of 86.
Record the quotient 9 as the next digit in the result. 
Result so far: 69.0
If we subtract 1035 from 1121, we get 86.
Include the next digit (0) from the dividend after 86, then repeat: 860 / 115

Let's proceed to step 5:
115 can be fit into 860 7 times, resulting in a remainder of 55.
Write down 7 as next digit of the result. 
Result so far: 697.0
The remainder is 55 after subtracting 805 from 860.
Bring next digit (8) of the dividend behind the 55 and repeat the process: 558 / 115

Advancing to step 6:
If we divide 558 by 115, we get 4 and a remainder of 98.
Use 4 as the next digit of our solution. 
Result so far: 6974.0
If we take 460 away from 558, we end up with 98.
Take the next digit (8) from the dividend and append it to 98, then repeat: 988 / 115

Advancing to step 7:
115 can be fit into 988 8 times, resulting in a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 69748.0
Deduct 920 from 988 and we're left with 68.
Fetch the next digit (5) from the dividend, attach it to 68 and continue: 685 / 115

On to step 8:
115 can be fit into 685 5 times, resulting in a remainder of 110.
The number 5 becomes the next digit in our result. 
Result so far: 697485.0
If we subtract 575 from 685, we get 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Moving on to step 9:
1100 divided by 115 is 9 with a remainder of 65.
Record the quotient 9 as the next digit in the result. 
Result so far: 697485.9
Subtracting 1035 from 1100 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 10:
650 divided by 115 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 697485.95
If we take 575 away from 650, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 11:
115 goes into 750 6 times with a remainder of 60.
Use 6 as the next digit of our solution. 
Result so far: 697485.956
If we take 690 away from 750, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 12:
115 can be fit into 600 5 times, resulting in a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 697485.9565
Subtracting 575 from 600 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 13:
115 can be fit into 250 2 times, resulting in a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 697485.95652
The remainder is 20 after subtracting 230 from 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 14:
When dividing 200 by 115, we get 1 with a remainder of 85.
The number 1 becomes the next digit in our result. 
Result so far: 697485.956521
If we take 115 away from 200, we end up with 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 15:
850 divided by 115 is 7 with a remainder of 45.
Put 7 as the next digit of the answer. 
Result so far: 697485.9565217
The remainder is 45 after subtracting 805 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Let's proceed to step 16:
115 goes into 450 3 times with a remainder of 105.
Record the quotient 3 as the next digit in the result. 
Result so far: 697485.95652173
The remainder is 105 after subtracting 345 from 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

After the division, we end up with 697485.95652173 and a remainder of 1.05e-07.