We're dividing 97184830 by 81 
The aim is to understand the frequency of 81 in 97184830.

Going ahead to step 1:
If we divide 9 by 81, we get 0 and a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (7) from the dividend after 9, then repeat: 97 / 81

On to step 2:
81 goes into 97 1 times with a remainder of 16.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 81 from 97 leaves us with 16.
Bring next digit (1) of the dividend behind the 16 and repeat the process: 161 / 81

Moving on to step 3:
If we divide 161 by 81, we get 1 and a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtracting 81 from 161 leaves us with 80.
Bring next digit (8) of the dividend behind the 80 and repeat the process: 808 / 81

Step 4:
The number 81 fits into 808 9 times, leaving a remainder of 79.
Use 9 as the next digit of our solution. 
Result so far: 119.0
Subtracting 729 from 808 leaves us with 79.
Append the next digit (4) from the dividend to 79 and continue with: 794 / 81

Let's proceed to step 5:
81 can be fit into 794 9 times, resulting in a remainder of 65.
Put 9 as the next digit of the answer. 
Result so far: 1199.0
If we subtract 729 from 794, we get 65.
Take the next digit (8) from the dividend and append it to 65, then repeat: 658 / 81

On to step 6:
658 divided by 81 is 8 with a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 11998.0
Subtract 648 from 658 to get 10.
Include the next digit (3) from the dividend after 10, then repeat: 103 / 81

On to step 7:
When dividing 103 by 81, we get 1 with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 119981.0
If we subtract 81 from 103, we get 22.
Append the next digit (0) from the dividend to 22 and continue with: 220 / 81

Going ahead to step 8:
81 goes into 220 2 times with a remainder of 58.
The next digit of our result is 2. 
Result so far: 1199812.0
The remainder is 58 after subtracting 162 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 9:
If we divide 580 by 81, we get 7 and a remainder of 13.
The number 7 becomes the next digit in our result. 
Result so far: 1199812.7
The remainder is 13 after subtracting 567 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 10:
81 goes into 130 1 times with a remainder of 49.
Put 1 as the next digit of the answer. 
Result so far: 1199812.71
Deduct 81 from 130 and we're left with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Moving on to step 11:
The number 81 fits into 490 6 times, leaving a remainder of 4.
Record the quotient 6 as the next digit in the result. 
Result so far: 1199812.716
Subtracting 486 from 490 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
If we divide 40 by 81, we get 0 and a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 1199812.716
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
400 divided by 81 is 4 with a remainder of 76.
Record the quotient 4 as the next digit in the result. 
Result so far: 1199812.71604
Deduct 324 from 400 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 14:
81 can be fit into 760 9 times, resulting in a remainder of 31.
Use 9 as the next digit of our solution. 
Result so far: 1199812.716049
The remainder is 31 after subtracting 729 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 15:
The number 81 fits into 310 3 times, leaving a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 1199812.7160493
Subtracting 243 from 310 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Advancing to step 16:
If we divide 670 by 81, we get 8 and a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 1199812.71604938
Deduct 648 from 670 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

After the division, we end up with 1199812.71604938 and a remainder of 2.2e-08.