17379995 divided by 81 
The aim is to understand the frequency of 81 in 17379995.

Moving on to step 1:
81 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 81

Step 2:
81 can be fit into 17 0 times, resulting in a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 17 after subtracting 0 from 17.
Fetch the next digit (3) from the dividend, attach it to 17 and continue: 173 / 81

Moving on to step 3:
When dividing 173 by 81, we get 2 with a remainder of 11.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 162 from 173 and we're left with 11.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 81

Let's proceed to step 4:
If we divide 117 by 81, we get 1 and a remainder of 36.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Subtract 81 from 117 to get 36.
Append the next digit (9) from the dividend to 36 and continue with: 369 / 81

Going ahead to step 5:
When dividing 369 by 81, we get 4 with a remainder of 45.
The number 4 becomes the next digit in our result. 
Result so far: 214.0
The remainder is 45 after subtracting 324 from 369.
Bring next digit (9) of the dividend behind the 45 and repeat the process: 459 / 81

Let's proceed to step 6:
The number 81 fits into 459 5 times, leaving a remainder of 54.
Record the quotient 5 as the next digit in the result. 
Result so far: 2145.0
The remainder is 54 after subtracting 405 from 459.
Fetch the next digit (9) from the dividend, attach it to 54 and continue: 549 / 81

Advancing to step 7:
549 divided by 81 is 6 with a remainder of 63.
The number 6 becomes the next digit in our result. 
Result so far: 21456.0
Deduct 486 from 549 and we're left with 63.
Bring next digit (5) of the dividend behind the 63 and repeat the process: 635 / 81

Step 8:
When dividing 635 by 81, we get 7 with a remainder of 68.
Record the quotient 7 as the next digit in the result. 
Result so far: 214567.0
Deduct 567 from 635 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 9:
81 goes into 680 8 times with a remainder of 32.
Use 8 as the next digit of our solution. 
Result so far: 214567.8
If we subtract 648 from 680, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

On to step 10:
The number 81 fits into 320 3 times, leaving a remainder of 77.
Put 3 as the next digit of the answer. 
Result so far: 214567.83
If we subtract 243 from 320, we get 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Going ahead to step 11:
770 divided by 81 is 9 with a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 214567.839
Deduct 729 from 770 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Step 12:
81 can be fit into 410 5 times, resulting in a remainder of 5.
Use 5 as the next digit of our solution. 
Result so far: 214567.8395
Deduct 405 from 410 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Step 13:
50 divided by 81 is 0 with a remainder of 50.
Put 0 as the next digit of the answer. 
Result so far: 214567.8395
Subtract 0 from 50 to get 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Moving on to step 14:
If we divide 500 by 81, we get 6 and a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 214567.839506
Subtract 486 from 500 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 15:
81 can be fit into 140 1 times, resulting in a remainder of 59.
Put 1 as the next digit of the answer. 
Result so far: 214567.8395061
The remainder is 59 after subtracting 81 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Step 16:
If we divide 590 by 81, we get 7 and a remainder of 23.
Record the quotient 7 as the next digit in the result. 
Result so far: 214567.83950617
If we subtract 567 from 590, we get 23.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Our division results in 214567.83950617 with a remaining 2.3e-08.