25552728 divided by 840 
The aim is to understand the frequency of 840 in 25552728.

Advancing to step 1:
The number 840 fits into 2 0 times, leaving a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Bring next digit (5) of the dividend behind the 2 and repeat the process: 25 / 840

Moving on to step 2:
25 divided by 840 is 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Bring next digit (5) of the dividend behind the 25 and repeat the process: 255 / 840

Moving on to step 3:
840 can be fit into 255 0 times, resulting in a remainder of 255.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 255, we get 255.
Grab the next digit (5) from the dividend, add it to 255, then carry on: 2555 / 840

Moving on to step 4:
2555 divided by 840 is 3 with a remainder of 35.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 2520 away from 2555, we end up with 35.
Bring next digit (2) of the dividend behind the 35 and repeat the process: 352 / 840

On to step 5:
352 divided by 840 is 0 with a remainder of 352.
Use 0 as the next digit of our solution. 
Result so far: 30.0
The remainder is 352 after subtracting 0 from 352.
Append the next digit (7) from the dividend to 352 and continue with: 3527 / 840

Advancing to step 6:
The number 840 fits into 3527 4 times, leaving a remainder of 167.
Write down 4 as next digit of the result. 
Result so far: 304.0
Subtract 3360 from 3527 to get 167.
Fetch the next digit (2) from the dividend, attach it to 167 and continue: 1672 / 840

Let's proceed to step 7:
1672 divided by 840 is 1 with a remainder of 832.
The number 1 becomes the next digit in our result. 
Result so far: 3041.0
Subtract 840 from 1672 to get 832.
Take the next digit (8) from the dividend and append it to 832, then repeat: 8328 / 840

Moving on to step 8:
When dividing 8328 by 840, we get 9 with a remainder of 768.
Record the quotient 9 as the next digit in the result. 
Result so far: 30419.0
Deduct 7560 from 8328 and we're left with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Let's proceed to step 9:
If we divide 7680 by 840, we get 9 and a remainder of 120.
Use 9 as the next digit of our solution. 
Result so far: 30419.9
If we subtract 7560 from 7680, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 10:
840 can be fit into 1200 1 times, resulting in a remainder of 360.
Write down 1 as next digit of the result. 
Result so far: 30419.91
Subtracting 840 from 1200 leaves us 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.

Going ahead to step 11:
3600 divided by 840 is 4 with a remainder of 240.
The next digit of our result is 4. 
Result so far: 30419.914
Subtract 3360 from 3600 to 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 12:
If we divide 2400 by 840, we get 2 and a remainder of 720.
The number 2 becomes the next digit in our result. 
Result so far: 30419.9142
If we take 1680 away from 2400, we end up 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 13:
The number 840 fits into 7200 8 times, leaving a remainder of 480.
Put 8 as the next digit of the answer. 
Result so far: 30419.91428
Subtract 6720 from 7200 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

On to step 14:
840 can be fit into 4800 5 times, resulting in a remainder of 600.
The next digit of our result is 5. 
Result so far: 30419.914285
Subtracting 4200 from 4800 leaves us with 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

Moving on to step 15:
If we divide 6000 by 840, we get 7 and a remainder of 120.
Write down 7 as next digit of the result. 
Result so far: 30419.9142857
If we subtract 5880 from 6000, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 16:
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: 30419.91428571
Deduct 840 from 1200 and we're left 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.

Our division results in 30419.91428571 with a remaining 3.6e-07.