Let's divide 130816 by 81
The aim is to understand the frequency of 81 in 130816.

Going ahead to step 1:
81 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (3) from the dividend, add it to 1, then carry on: 13 / 81

Step 2:
81 goes into 13 0 times with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 81

Let's proceed to step 3:
130 divided by 81 is 1 with a remainder of 49.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 81 from 130 and we're left with 49.
Take the next digit (8) from the dividend and append it to 49, then repeat: 498 / 81

Let's proceed to step 4:
The number 81 fits into 498 6 times, leaving a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 16.0
Subtracting 486 from 498 leaves us with 12.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 81

Let's proceed to step 5:
81 goes into 121 1 times with a remainder of 40.
The next digit of our result is 1. 
Result so far: 161.0
Deduct 81 from 121 and we're left with 40.
Include the next digit (6) from the dividend after 40, then repeat: 406 / 81

Advancing to step 6:
406 divided by 81 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 1615.0
Subtracting 405 from 406 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 7:
10 divided by 81 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 1615.0
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 8:
If we divide 100 by 81, we get 1 and a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 1615.01
If we subtract 81 from 100, we get 19.
Since there are no more digits in the dividend, we add a zero to the remainder making it 190, and continue the process.

Step 9:
190 divided by 81 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 1615.012
Subtracting 162 from 190 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 10:
If we divide 280 by 81, we get 3 and a remainder of 37.
Write down 3 as next digit of the result. 
Result so far: 1615.0123
Subtract 243 from 280 to get 37.
Since there are no more digits in the dividend, we add a zero to the remainder making it 370, and continue the process.

Let's proceed to step 11:
The number 81 fits into 370 4 times, leaving a remainder of 46.
Use 4 as the next digit of our solution. 
Result so far: 1615.01234
Subtract 324 from 370 to get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Going ahead to step 12:
81 can be fit into 460 5 times, resulting in a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 1615.012345
If we subtract 405 from 460, we get 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Going ahead to step 13:
81 can be fit into 550 6 times, resulting in a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 1615.0123456
If we subtract 486 from 550, we get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Advancing to step 14:
81 goes into 640 7 times with a remainder of 73.
Record the quotient 7 as the next digit in the result. 
Result so far: 1615.01234567
Subtracting 567 from 640 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

The final outcome is 1615.01234567, with a leftover of 7.3e-08.