Let's divide 769219 by 81
The aim is to understand the frequency of 81 in 769219.

On to step 1:
The number 81 fits into 7 0 times, leaving a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (6) from the dividend to 7 and continue with: 76 / 81

Advancing to step 2:
The number 81 fits into 76 0 times, leaving a remainder of 76.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 76 and we're left with 76.
Grab the next digit (9) from the dividend, add it to 76, then carry on: 769 / 81

Moving on to step 3:
When dividing 769 by 81, we get 9 with a remainder of 40.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we subtract 729 from 769, we get 40.
Fetch the next digit (2) from the dividend, attach it to 40 and continue: 402 / 81

On to step 4:
The number 81 fits into 402 4 times, leaving a remainder of 78.
The number 4 becomes the next digit in our result. 
Result so far: 94.0
Subtract 324 from 402 to get 78.
Bring next digit (1) of the dividend behind the 78 and repeat the process: 781 / 81

Let's proceed to step 5:
781 divided by 81 is 9 with a remainder of 52.
Write down 9 as next digit of the result. 
Result so far: 949.0
Subtracting 729 from 781 leaves us with 52.
Take the next digit (9) from the dividend and append it to 52, then repeat: 529 / 81

Moving on to step 6:
The number 81 fits into 529 6 times, leaving a remainder of 43.
Put 6 as the next digit of the answer. 
Result so far: 9496.0
If we take 486 away from 529, we end up 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.

Advancing to step 7:
430 divided by 81 is 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 9496.5
Subtract 405 from 430 to get 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 8:
If we divide 250 by 81, we get 3 and a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 9496.53
Subtracting 243 from 250 leaves us 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.

Advancing to step 9:
70 divided by 81 is 0 with a remainder of 70.
The next digit of our result is 0. 
Result so far: 9496.53
If we subtract 0 from 70, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 10:
81 can be fit into 700 8 times, resulting in a remainder of 52.
Write down 8 as next digit of the result. 
Result so far: 9496.5308
Subtracting 648 from 700 leaves us with 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 11:
520 divided by 81 is 6 with a remainder of 34.
The next digit of our result is 6. 
Result so far: 9496.53086
Subtract 486 from 520 to 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.

Let's proceed to step 12:
The number 81 fits into 340 4 times, leaving a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 9496.530864
Subtracting 324 from 340 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 13:
The number 81 fits into 160 1 times, leaving a remainder of 79.
Put 1 as the next digit of the answer. 
Result so far: 9496.5308641
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.

Advancing to step 14:
If we divide 790 by 81, we get 9 and a remainder of 61.
Put 9 as the next digit of the answer. 
Result so far: 9496.53086419
The remainder is 61 after subtracting 729 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

The final result is 9496.53086419 with a remainder of 6.1e-08.