173384 ÷ 81 
The aim is to understand the frequency of 81 in 173384.

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
Subtract 0 from 1 to get 1.
Grab the next digit (7) from the dividend, add it to 1, then carry on: 17 / 81

On to step 2:
When dividing 17 by 81, we get 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 17 leaves us with 17.
Bring next digit (3) of the dividend behind the 17 and repeat the process: 173 / 81

Let's proceed to step 3:
If we divide 173 by 81, we get 2 and a remainder of 11.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Deduct 162 from 173 and we're left with 11.
Bring next digit (3) of the dividend behind the 11 and repeat the process: 113 / 81

On to step 4:
When dividing 113 by 81, we get 1 with a remainder of 32.
Put 1 as the next digit of the answer. 
Result so far: 21.0
The remainder is 32 after subtracting 81 from 113.
Fetch the next digit (8) from the dividend, attach it to 32 and continue: 328 / 81

On to step 5:
81 goes into 328 4 times with a remainder of 4.
The number 4 becomes the next digit in our result. 
Result so far: 214.0
If we take 324 away from 328, we end up with 4.
Append the next digit (4) from the dividend to 4 and continue with: 44 / 81

Step 6:
81 can be fit into 44 0 times, resulting in a remainder of 44.
Use 0 as the next digit of our solution. 
Result so far: 2140.0
If we subtract 0 from 44, 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.

Going ahead to step 7:
When dividing 440 by 81, we get 5 with a remainder of 35.
Write down 5 as next digit of the result. 
Result so far: 2140.5
If we subtract 405 from 440, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 8:
81 can be fit into 350 4 times, resulting in a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 2140.54
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 9:
81 goes into 260 3 times with a remainder of 17.
Record the quotient 3 as the next digit in the result. 
Result so far: 2140.543
If we take 243 away from 260, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 10:
When dividing 170 by 81, we get 2 with a remainder of 8.
The number 2 becomes the next digit in our result. 
Result so far: 2140.5432
If we subtract 162 from 170, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Moving on to step 11:
81 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 2140.5432
If we subtract 0 from 80, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
800 divided by 81 is 9 with a remainder of 71.
Write down 9 as next digit of the result. 
Result so far: 2140.543209
If we take 729 away from 800, we end up with 71.
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 13:
710 divided by 81 is 8 with a remainder of 62.
Record the quotient 8 as the next digit in the result. 
Result so far: 2140.5432098
Subtracting 648 from 710 leaves us 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.

Let's proceed to step 14:
81 can be fit into 620 7 times, resulting in a remainder of 53.
The number 7 becomes the next digit in our result. 
Result so far: 2140.54320987
If we take 567 away from 620, we end up with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

The quotient of the division is 2140.54320987, and the remainder is 5.3e-08.