Let's divide 67420783 by 81
The aim is to understand the frequency of 81 in 67420783.

Let's proceed to step 1:
The number 81 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Fetch the next digit (7) from the dividend, attach it to 6 and continue: 67 / 81

On to step 2:
The number 81 fits into 67 0 times, leaving a remainder of 67.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 67 leaves us with 67.
Grab the next digit (4) from the dividend, add it to 67, then carry on: 674 / 81

Moving on to step 3:
If we divide 674 by 81, we get 8 and a remainder of 26.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
Subtracting 648 from 674 leaves us with 26.
Append the next digit (2) from the dividend to 26 and continue with: 262 / 81

Step 4:
The number 81 fits into 262 3 times, leaving a remainder of 19.
Record the quotient 3 as the next digit in the result. 
Result so far: 83.0
Subtracting 243 from 262 leaves us with 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 81

Let's proceed to step 5:
190 divided by 81 is 2 with a remainder of 28.
Put 2 as the next digit of the answer. 
Result so far: 832.0
Deduct 162 from 190 and we're left with 28.
Fetch the next digit (7) from the dividend, attach it to 28 and continue: 287 / 81

Moving on to step 6:
287 divided by 81 is 3 with a remainder of 44.
Write down 3 as next digit of the result. 
Result so far: 8323.0
If we take 243 away from 287, we end up with 44.
Fetch the next digit (8) from the dividend, attach it to 44 and continue: 448 / 81

Advancing to step 7:
81 goes into 448 5 times with a remainder of 43.
The number 5 becomes the next digit in our result. 
Result so far: 83235.0
Deduct 405 from 448 and we're left with 43.
Bring next digit (3) of the dividend behind the 43 and repeat the process: 433 / 81

Advancing to step 8:
433 divided by 81 is 5 with a remainder of 28.
Record the quotient 5 as the next digit in the result. 
Result so far: 832355.0
If we take 405 away from 433, we end up 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.

Let's proceed to step 9:
If we divide 280 by 81, we get 3 and a remainder of 37.
The next digit of our result is 3. 
Result so far: 832355.3
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.

On to step 10:
370 divided by 81 is 4 with a remainder of 46.
The next digit of our result is 4. 
Result so far: 832355.34
Deduct 324 from 370 and we're left with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Step 11:
81 goes into 460 5 times with a remainder of 55.
Record the quotient 5 as the next digit in the result. 
Result so far: 832355.345
Subtract 405 from 460 to 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.

Moving on to step 12:
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: 832355.3456
Deduct 486 from 550 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 13:
81 goes into 640 7 times with a remainder of 73.
The next digit of our result is 7. 
Result so far: 832355.34567
The remainder is 73 after subtracting 567 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

On to step 14:
730 divided by 81 is 9 with a remainder of 1.
The number 9 becomes the next digit in our result. 
Result so far: 832355.345679
Subtract 729 from 730 to get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 15:
If we divide 10 by 81, we get 0 and a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 832355.345679
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 16:
100 divided by 81 is 1 with a remainder of 19.
Write down 1 as next digit of the result. 
Result so far: 832355.34567901
Subtract 81 from 100 to 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.

The final outcome is 832355.34567901, with a leftover of 1.9e-08.