We look at the division of 1646181 by 817 
The aim is to understand the frequency of 817 in 1646181.

Step 1:
817 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 817

Moving on to step 2:
The number 817 fits into 16 0 times, leaving a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 16 and we're left with 16.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 817

Advancing to step 3:
817 can be fit into 164 0 times, resulting in a remainder of 164.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 164 after subtracting 0 from 164.
Bring next digit (6) of the dividend behind the 164 and repeat the process: 1646 / 817

Let's proceed to step 4:
When dividing 1646 by 817, we get 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 12 after subtracting 1634 from 1646.
Bring next digit (1) of the dividend behind the 12 and repeat the process: 121 / 817

Moving on to step 5:
If we divide 121 by 817, we get 0 and a remainder of 121.
Record the quotient 0 as the next digit in the result. 
Result so far: 20.0
If we take 0 away from 121, we end up with 121.
Append the next digit (8) from the dividend to 121 and continue with: 1218 / 817

Moving on to step 6:
The number 817 fits into 1218 1 times, leaving a remainder of 401.
Use 1 as the next digit of our solution. 
Result so far: 201.0
If we subtract 817 from 1218, we get 401.
Bring next digit (1) of the dividend behind the 401 and repeat the process: 4011 / 817

Advancing to step 7:
When dividing 4011 by 817, we get 4 with a remainder of 743.
Use 4 as the next digit of our solution. 
Result so far: 2014.0
Deduct 3268 from 4011 and we're left with 743.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7430, and continue the process.

Let's proceed to step 8:
817 goes into 7430 9 times with a remainder of 77.
Put 9 as the next digit of the answer. 
Result so far: 2014.9
If we subtract 7353 from 7430, 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.

On to step 9:
When dividing 770 by 817, we get 0 with a remainder of 770.
The number 0 becomes the next digit in our result. 
Result so far: 2014.9
Deduct 0 from 770 and we're left with 770.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7700, and continue the process.

Advancing to step 10:
The number 817 fits into 7700 9 times, leaving a remainder of 347.
Record the quotient 9 as the next digit in the result. 
Result so far: 2014.909
If we take 7353 away from 7700, we end up with 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

On to step 11:
The number 817 fits into 3470 4 times, leaving a remainder of 202.
Record the quotient 4 as the next digit in the result. 
Result so far: 2014.9094
If we subtract 3268 from 3470, we get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Let's proceed to step 12:
When dividing 2020 by 817, we get 2 with a remainder of 386.
The next digit of our result is 2. 
Result so far: 2014.90942
The remainder is 386 after subtracting 1634 from 2020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Let's proceed to step 13:
The number 817 fits into 3860 4 times, leaving a remainder of 592.
Write down 4 as next digit of the result. 
Result so far: 2014.909424
Subtracting 3268 from 3860 leaves us with 592.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5920, and continue the process.

Let's proceed to step 14:
When dividing 5920 by 817, we get 7 with a remainder of 201.
Use 7 as the next digit of our solution. 
Result so far: 2014.9094247
Subtracting 5719 from 5920 leaves us with 201.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2010, and continue the process.

Going ahead to step 15:
If we divide 2010 by 817, we get 2 and a remainder of 376.
Record the quotient 2 as the next digit in the result. 
Result so far: 2014.90942472
If we subtract 1634 from 2010, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

The quotient of the division is 2014.90942472, and the remainder is 3.76e-07.