We divide 877125 by 81
The aim is to understand the frequency of 81 in 877125.

Let's proceed to step 1:
If we divide 8 by 81, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (7) from the dividend to 8 and continue with: 87 / 81

Step 2:
81 goes into 87 1 times with a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 81 from 87 to get 6.
Include the next digit (7) from the dividend after 6, then repeat: 67 / 81

Moving on to step 3:
67 divided by 81 is 0 with a remainder of 67.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we take 0 away from 67, we end up with 67.
Include the next digit (1) from the dividend after 67, then repeat: 671 / 81

Step 4:
671 divided by 81 is 8 with a remainder of 23.
Write down 8 as next digit of the result. 
Result so far: 108.0
Subtract 648 from 671 to get 23.
Fetch the next digit (2) from the dividend, attach it to 23 and continue: 232 / 81

On to step 5:
81 can be fit into 232 2 times, resulting in a remainder of 70.
Record the quotient 2 as the next digit in the result. 
Result so far: 1082.0
The remainder is 70 after subtracting 162 from 232.
Grab the next digit (5) from the dividend, add it to 70, then carry on: 705 / 81

Advancing to step 6:
If we divide 705 by 81, we get 8 and a remainder of 57.
Write down 8 as next digit of the result. 
Result so far: 10828.0
Deduct 648 from 705 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 7:
If we divide 570 by 81, we get 7 and a remainder of 3.
The number 7 becomes the next digit in our result. 
Result so far: 10828.7
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 8:
30 divided by 81 is 0 with a remainder of 30.
Use 0 as the next digit of our solution. 
Result so far: 10828.7
If we subtract 0 from 30, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 9:
The number 81 fits into 300 3 times, leaving a remainder of 57.
Put 3 as the next digit of the answer. 
Result so far: 10828.703
Subtracting 243 from 300 leaves us with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 10:
When dividing 570 by 81, we get 7 with a remainder of 3.
The next digit of our result is 7. 
Result so far: 10828.7037
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Step 11:
81 can be fit into 30 0 times, resulting in a remainder of 30.
Record the quotient 0 as the next digit in the result. 
Result so far: 10828.7037
Deduct 0 from 30 and we're left with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Advancing to step 12:
If we divide 300 by 81, we get 3 and a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 10828.703703
Deduct 243 from 300 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Let's proceed to step 13:
If we divide 570 by 81, we get 7 and a remainder of 3.
Write down 7 as next digit of the result. 
Result so far: 10828.7037037
If we subtract 567 from 570, we get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 14:
When dividing 30 by 81, we get 0 with a remainder of 30.
The number 0 becomes the next digit in our result. 
Result so far: 10828.7037037
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 10828.7037037, with a leftover of 3e-08.