We're dividing 16903873 by 817 
The aim is to understand the frequency of 817 in 16903873.

Let's proceed to step 1:
817 goes into 1 0 times with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 817

Going ahead to step 2:
When dividing 16 by 817, we get 0 with a remainder of 16.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Fetch the next digit (9) from the dividend, attach it to 16 and continue: 169 / 817

Going ahead to step 3:
If we divide 169 by 817, we get 0 and a remainder of 169.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 169 after subtracting 0 from 169.
Include the next digit (0) from the dividend after 169, then repeat: 1690 / 817

Going ahead to step 4:
1690 divided by 817 is 2 with a remainder of 56.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we subtract 1634 from 1690, we get 56.
Grab the next digit (3) from the dividend, add it to 56, then carry on: 563 / 817

On to step 5:
817 can be fit into 563 0 times, resulting in a remainder of 563.
Write down 0 as next digit of the result. 
Result so far: 20.0
If we take 0 away from 563, we end up with 563.
Append the next digit (8) from the dividend to 563 and continue with: 5638 / 817

On to step 6:
The number 817 fits into 5638 6 times, leaving a remainder of 736.
Put 6 as the next digit of the answer. 
Result so far: 206.0
If we take 4902 away from 5638, we end up with 736.
Append the next digit (7) from the dividend to 736 and continue with: 7367 / 817

On to step 7:
817 goes into 7367 9 times with a remainder of 14.
Write down 9 as next digit of the result. 
Result so far: 2069.0
The remainder is 14 after subtracting 7353 from 7367.
Include the next digit (3) from the dividend after 14, then repeat: 143 / 817

Moving on to step 8:
The number 817 fits into 143 0 times, leaving a remainder of 143.
The number 0 becomes the next digit in our result. 
Result so far: 20690.0
If we take 0 away from 143, we end up with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Step 9:
817 goes into 1430 1 times with a remainder of 613.
Record the quotient 1 as the next digit in the result. 
Result so far: 20690.1
Subtract 817 from 1430 to get 613.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6130, and continue the process.

Let's proceed to step 10:
817 goes into 6130 7 times with a remainder of 411.
The number 7 becomes the next digit in our result. 
Result so far: 20690.17
Deduct 5719 from 6130 and we're left with 411.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4110, and continue the process.

Step 11:
When dividing 4110 by 817, we get 5 with a remainder of 25.
Record the quotient 5 as the next digit in the result. 
Result so far: 20690.175
Deduct 4085 from 4110 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 12:
The number 817 fits into 250 0 times, leaving a remainder of 250.
Put 0 as the next digit of the answer. 
Result so far: 20690.175
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 13:
When dividing 2500 by 817, we get 3 with a remainder of 49.
The next digit of our result is 3. 
Result so far: 20690.17503
Deduct 2451 from 2500 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.

Going ahead to step 14:
490 divided by 817 is 0 with a remainder of 490.
Write down 0 as next digit of the result. 
Result so far: 20690.17503
Subtracting 0 from 490 leaves us with 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

On to step 15:
If we divide 4900 by 817, we get 5 and a remainder of 815.
Record the quotient 5 as the next digit in the result. 
Result so far: 20690.1750305
If we take 4085 away from 4900, we end up with 815.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8150, and continue the process.

Step 16:
817 goes into 8150 9 times with a remainder of 797.
Write down 9 as next digit of the result. 
Result so far: 20690.17503059
Subtracting 7353 from 8150 leaves us with 797.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7970, and continue the process.

The final result is 20690.17503059 with a remainder of 7.97e-07.