We divide 133739 by 81
The aim is to understand the frequency of 81 in 133739.

Going ahead to step 1:
1 divided by 81 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (3) from the dividend to 1 and continue with: 13 / 81

Going ahead to step 2:
When dividing 13 by 81, we get 0 with a remainder of 13.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Take the next digit (3) from the dividend and append it to 13, then repeat: 133 / 81

Step 3:
133 divided by 81 is 1 with a remainder of 52.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 81 from 133 to get 52.
Fetch the next digit (7) from the dividend, attach it to 52 and continue: 527 / 81

Going ahead to step 4:
If we divide 527 by 81, we get 6 and a remainder of 41.
Write down 6 as next digit of the result. 
Result so far: 16.0
Deduct 486 from 527 and we're left with 41.
Grab the next digit (3) from the dividend, add it to 41, then carry on: 413 / 81

Let's proceed to step 5:
81 goes into 413 5 times with a remainder of 8.
Put 5 as the next digit of the answer. 
Result so far: 165.0
If we subtract 405 from 413, we get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 81

Going ahead to step 6:
81 can be fit into 89 1 times, resulting in a remainder of 8.
The next digit of our result is 1. 
Result so far: 1651.0
Deduct 81 from 89 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Advancing to step 7:
The number 81 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 1651.0
If we take 0 away from 80, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 8:
800 divided by 81 is 9 with a remainder of 71.
The next digit of our result is 9. 
Result so far: 1651.09
The remainder is 71 after subtracting 729 from 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Let's proceed to step 9:
81 can be fit into 710 8 times, resulting in a remainder of 62.
Use 8 as the next digit of our solution. 
Result so far: 1651.098
If we take 648 away from 710, we end up with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 10:
620 divided by 81 is 7 with a remainder of 53.
Use 7 as the next digit of our solution. 
Result so far: 1651.0987
Subtract 567 from 620 to get 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Going ahead to step 11:
The number 81 fits into 530 6 times, leaving a remainder of 44.
The next digit of our result is 6. 
Result so far: 1651.09876
If we subtract 486 from 530, we get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 12:
440 divided by 81 is 5 with a remainder of 35.
Put 5 as the next digit of the answer. 
Result so far: 1651.098765
Deduct 405 from 440 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Going ahead to step 13:
The number 81 fits into 350 4 times, leaving a remainder of 26.
Record the quotient 4 as the next digit in the result. 
Result so far: 1651.0987654
If we take 324 away from 350, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 14:
81 can be fit into 260 3 times, resulting in a remainder of 17.
Use 3 as the next digit of our solution. 
Result so far: 1651.09876543
If we subtract 243 from 260, we get 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

In conclusion, the division gives 1651.09876543 with a balance of 1.7e-08.