12400392 divided by 172 
The aim is to understand the frequency of 172 in 12400392.

On to step 1:
172 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 172

Advancing to step 2:
172 goes into 12 0 times with a remainder of 12.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Bring next digit (4) of the dividend behind the 12 and repeat the process: 124 / 172

Step 3:
172 goes into 124 0 times with a remainder of 124.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 124 leaves us with 124.
Include the next digit (0) from the dividend after 124, then repeat: 1240 / 172

Advancing to step 4:
172 can be fit into 1240 7 times, resulting in a remainder of 36.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Subtracting 1204 from 1240 leaves us with 36.
Take the next digit (0) from the dividend and append it to 36, then repeat: 360 / 172

Let's proceed to step 5:
360 divided by 172 is 2 with a remainder of 16.
Write down 2 as next digit of the result. 
Result so far: 72.0
If we take 344 away from 360, we end up with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 172

Step 6:
172 goes into 163 0 times with a remainder of 163.
The next digit of our result is 0. 
Result so far: 720.0
If we subtract 0 from 163, we get 163.
Append the next digit (9) from the dividend to 163 and continue with: 1639 / 172

Moving on to step 7:
If we divide 1639 by 172, we get 9 and a remainder of 91.
Record the quotient 9 as the next digit in the result. 
Result so far: 7209.0
Subtract 1548 from 1639 to get 91.
Bring next digit (2) of the dividend behind the 91 and repeat the process: 912 / 172

Advancing to step 8:
172 can be fit into 912 5 times, resulting in a remainder of 52.
The next digit of our result is 5. 
Result so far: 72095.0
Subtract 860 from 912 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 9:
If we divide 520 by 172, we get 3 and a remainder of 4.
Use 3 as the next digit of our solution. 
Result so far: 72095.3
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Let's proceed to step 10:
When dividing 40 by 172, we get 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 72095.3
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 11:
The number 172 fits into 400 2 times, leaving a remainder of 56.
Write down 2 as next digit of the result. 
Result so far: 72095.302
Subtracting 344 from 400 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Going ahead to step 12:
560 divided by 172 is 3 with a remainder of 44.
The number 3 becomes the next digit in our result. 
Result so far: 72095.3023
Subtracting 516 from 560 leaves us with 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Let's proceed to step 13:
440 divided by 172 is 2 with a remainder of 96.
Record the quotient 2 as the next digit in the result. 
Result so far: 72095.30232
Subtract 344 from 440 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 14:
The number 172 fits into 960 5 times, leaving a remainder of 100.
Put 5 as the next digit of the answer. 
Result so far: 72095.302325
Deduct 860 from 960 and we're left with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 15:
If we divide 1000 by 172, we get 5 and a remainder of 140.
Write down 5 as next digit of the result. 
Result so far: 72095.3023255
The remainder is 140 after subtracting 860 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

After the division, we end up with 72095.3023255 and a remainder of 1.4e-06.