We divide 13261498 by 81
The aim is to understand the frequency of 81 in 13261498.

Advancing to step 1:
When dividing 1 by 81, we get 0 with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 81

Advancing to step 2:
The number 81 fits into 13 0 times, leaving a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Bring next digit (2) of the dividend behind the 13 and repeat the process: 132 / 81

Advancing to step 3:
When dividing 132 by 81, we get 1 with a remainder of 51.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 81 away from 132, we end up with 51.
Take the next digit (6) from the dividend and append it to 51, then repeat: 516 / 81

Let's proceed to step 4:
When dividing 516 by 81, we get 6 with a remainder of 30.
Record the quotient 6 as the next digit in the result. 
Result so far: 16.0
Subtract 486 from 516 to get 30.
Bring next digit (1) of the dividend behind the 30 and repeat the process: 301 / 81

On to step 5:
301 divided by 81 is 3 with a remainder of 58.
Put 3 as the next digit of the answer. 
Result so far: 163.0
If we take 243 away from 301, we end up with 58.
Grab the next digit (4) from the dividend, add it to 58, then carry on: 584 / 81

On to step 6:
81 goes into 584 7 times with a remainder of 17.
The number 7 becomes the next digit in our result. 
Result so far: 1637.0
The remainder is 17 after subtracting 567 from 584.
Include the next digit (9) from the dividend after 17, then repeat: 179 / 81

Advancing to step 7:
When dividing 179 by 81, we get 2 with a remainder of 17.
The number 2 becomes the next digit in our result. 
Result so far: 16372.0
If we take 162 away from 179, we end up with 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 81

Advancing to step 8:
178 divided by 81 is 2 with a remainder of 16.
Record the quotient 2 as the next digit in the result. 
Result so far: 163722.0
The remainder is 16 after subtracting 162 from 178.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 9:
When dividing 160 by 81, we get 1 with a remainder of 79.
Record the quotient 1 as the next digit in the result. 
Result so far: 163722.1
Deduct 81 from 160 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Going ahead to step 10:
790 divided by 81 is 9 with a remainder of 61.
Use 9 as the next digit of our solution. 
Result so far: 163722.19
Subtract 729 from 790 to get 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Advancing to step 11:
81 goes into 610 7 times with a remainder of 43.
Write down 7 as next digit of the result. 
Result so far: 163722.197
Subtracting 567 from 610 leaves us with 43.
Since there are no more digits in the dividend, we add a zero to the remainder making it 430, and continue the process.

On to step 12:
The number 81 fits into 430 5 times, leaving a remainder of 25.
The number 5 becomes the next digit in our result. 
Result so far: 163722.1975
If we take 405 away from 430, we end up 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.

Going ahead to step 13:
When dividing 250 by 81, we get 3 with a remainder of 7.
Use 3 as the next digit of our solution. 
Result so far: 163722.19753
If we take 243 away from 250, we end up with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 14:
70 divided by 81 is 0 with a remainder of 70.
Record the quotient 0 as the next digit in the result. 
Result so far: 163722.19753
Subtracting 0 from 70 leaves us with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Step 15:
81 goes into 700 8 times with a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 163722.1975308
Subtract 648 from 700 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 16:
81 goes into 520 6 times with a remainder of 34.
The number 6 becomes the next digit in our result. 
Result so far: 163722.19753086
If we subtract 486 from 520, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

The final outcome is 163722.19753086, with a leftover of 3.4e-08.