Let's divide 14253252 by 840
The aim is to understand the frequency of 840 in 14253252.

Advancing to step 1:
840 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
The remainder is 1 after subtracting 0 from 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 840

Advancing to step 2:
If we divide 14 by 840, we get 0 and a remainder of 14.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 14 after subtracting 0 from 14.
Fetch the next digit (2) from the dividend, attach it to 14 and continue: 142 / 840

On to step 3:
840 can be fit into 142 0 times, resulting in a remainder of 142.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 142 after subtracting 0 from 142.
Fetch the next digit (5) from the dividend, attach it to 142 and continue: 1425 / 840

Advancing to step 4:
840 goes into 1425 1 times with a remainder of 585.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 840 away from 1425, we end up with 585.
Append the next digit (3) from the dividend to 585 and continue with: 5853 / 840

Step 5:
5853 divided by 840 is 6 with a remainder of 813.
The number 6 becomes the next digit in our result. 
Result so far: 16.0
If we subtract 5040 from 5853, we get 813.
Append the next digit (2) from the dividend to 813 and continue with: 8132 / 840

Going ahead to step 6:
If we divide 8132 by 840, we get 9 and a remainder of 572.
Record the quotient 9 as the next digit in the result. 
Result so far: 169.0
If we take 7560 away from 8132, we end up with 572.
Bring next digit (5) of the dividend behind the 572 and repeat the process: 5725 / 840

Advancing to step 7:
When dividing 5725 by 840, we get 6 with a remainder of 685.
Record the quotient 6 as the next digit in the result. 
Result so far: 1696.0
If we subtract 5040 from 5725, we get 685.
Include the next digit (2) from the dividend after 685, then repeat: 6852 / 840

Step 8:
When dividing 6852 by 840, we get 8 with a remainder of 132.
The number 8 becomes the next digit in our result. 
Result so far: 16968.0
The remainder is 132 after subtracting 6720 from 6852.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Going ahead to step 9:
840 goes into 1320 1 times with a remainder of 480.
Put 1 as the next digit of the answer. 
Result so far: 16968.1
The remainder is 480 after subtracting 840 from 1320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 10:
The number 840 fits into 4800 5 times, leaving a remainder of 600.
Use 5 as the next digit of our solution. 
Result so far: 16968.15
The remainder is 600 after subtracting 4200 from 4800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Let's proceed to step 11:
6000 divided by 840 is 7 with a remainder of 120.
Use 7 as the next digit of our solution. 
Result so far: 16968.157
Deduct 5880 from 6000 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Going ahead to step 12:
840 can be fit into 1200 1 times, resulting in a remainder of 360.
Put 1 as the next digit of the answer. 
Result so far: 16968.1571
If we take 840 away from 1200, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 13:
When dividing 3600 by 840, we get 4 with a remainder of 240.
Record the quotient 4 as the next digit in the result. 
Result so far: 16968.15714
If we subtract 3360 from 3600, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 14:
840 can be fit into 2400 2 times, resulting in a remainder of 720.
Use 2 as the next digit of our solution. 
Result so far: 16968.157142
Subtracting 1680 from 2400 leaves us with 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7200, and continue the process.

On to step 15:
840 can be fit into 7200 8 times, resulting in a remainder of 480.
Use 8 as the next digit of our solution. 
Result so far: 16968.1571428
Subtracting 6720 from 7200 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Advancing to step 16:
When dividing 4800 by 840, we get 5 with a remainder of 600.
Write down 5 as next digit of the result. 
Result so far: 16968.15714285
If we subtract 4200 from 4800, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

After the division, we end up with 16968.15714285 and a remainder of 6e-07.