We look at the division of 16403250 by 684 
The aim is to understand the frequency of 684 in 16403250.

Step 1:
684 can be fit into 1 0 times, resulting in 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 (6) from the dividend, attach it to 1 and continue: 16 / 684

Going ahead to step 2:
684 can be fit into 16 0 times, resulting in a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Bring next digit (4) of the dividend behind the 16 and repeat the process: 164 / 684

Advancing to step 3:
When dividing 164 by 684, we get 0 with a remainder of 164.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 164, we end up with 164.
Grab the next digit (0) from the dividend, add it to 164, then carry on: 1640 / 684

Step 4:
1640 divided by 684 is 2 with a remainder of 272.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Subtracting 1368 from 1640 leaves us with 272.
Include the next digit (3) from the dividend after 272, then repeat: 2723 / 684

Let's proceed to step 5:
If we divide 2723 by 684, we get 3 and a remainder of 671.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Deduct 2052 from 2723 and we're left with 671.
Take the next digit (2) from the dividend and append it to 671, then repeat: 6712 / 684

Going ahead to step 6:
684 can be fit into 6712 9 times, resulting in a remainder of 556.
Record the quotient 9 as the next digit in the result. 
Result so far: 239.0
Deduct 6156 from 6712 and we're left with 556.
Take the next digit (5) from the dividend and append it to 556, then repeat: 5565 / 684

Step 7:
5565 divided by 684 is 8 with a remainder of 93.
Write down 8 as next digit of the result. 
Result so far: 2398.0
Deduct 5472 from 5565 and we're left with 93.
Fetch the next digit (0) from the dividend, attach it to 93 and continue: 930 / 684

Moving on to step 8:
When dividing 930 by 684, we get 1 with a remainder of 246.
The next digit of our result is 1. 
Result so far: 23981.0
If we subtract 684 from 930, we get 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Moving on to step 9:
684 goes into 2460 3 times with a remainder of 408.
The number 3 becomes the next digit in our result. 
Result so far: 23981.3
Subtract 2052 from 2460 to get 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Advancing to step 10:
684 can be fit into 4080 5 times, resulting in a remainder of 660.
Use 5 as the next digit of our solution. 
Result so far: 23981.35
If we take 3420 away from 4080, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Going ahead to step 11:
When dividing 6600 by 684, we get 9 with a remainder of 444.
The next digit of our result is 9. 
Result so far: 23981.359
If we take 6156 away from 6600, we end up with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 12:
When dividing 4440 by 684, we get 6 with a remainder of 336.
Write down 6 as next digit of the result. 
Result so far: 23981.3596
Subtract 4104 from 4440 to get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

Let's proceed to step 13:
If we divide 3360 by 684, we get 4 and a remainder of 624.
Write down 4 as next digit of the result. 
Result so far: 23981.35964
Subtracting 2736 from 3360 leaves us with 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Let's proceed to step 14:
6240 divided by 684 is 9 with a remainder of 84.
Use 9 as the next digit of our solution. 
Result so far: 23981.359649
Subtracting 6156 from 6240 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

On to step 15:
840 divided by 684 is 1 with a remainder of 156.
Put 1 as the next digit of the answer. 
Result so far: 23981.3596491
Subtracting 684 from 840 leaves us with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Moving on to step 16:
684 goes into 1560 2 times with a remainder of 192.
Write down 2 as next digit of the result. 
Result so far: 23981.35964912
If we take 1368 away from 1560, we end up with 192.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1920, and continue the process.

The final result is 23981.35964912 with a remainder of 1.92e-07.