25404541 divided by 84 
The aim is to understand the frequency of 84 in 25404541.

Step 1:
84 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (5) from the dividend, attach it to 2 and continue: 25 / 84

On to step 2:
When dividing 25 by 84, we get 0 with a remainder of 25.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 25 leaves us with 25.
Grab the next digit (4) from the dividend, add it to 25, then carry on: 254 / 84

Going ahead to step 3:
If we divide 254 by 84, we get 3 and a remainder of 2.
Use 3 as the next digit of our solution. 
Result so far: 3.0
If we take 252 away from 254, we end up with 2.
Append the next digit (0) from the dividend to 2 and continue with: 20 / 84

Let's proceed to step 4:
84 can be fit into 20 0 times, resulting in a remainder of 20.
The number 0 becomes the next digit in our result. 
Result so far: 30.0
The remainder is 20 after subtracting 0 from 20.
Append the next digit (4) from the dividend to 20 and continue with: 204 / 84

Going ahead to step 5:
204 divided by 84 is 2 with a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 302.0
The remainder is 36 after subtracting 168 from 204.
Grab the next digit (5) from the dividend, add it to 36, then carry on: 365 / 84

Moving on to step 6:
When dividing 365 by 84, we get 4 with a remainder of 29.
The number 4 becomes the next digit in our result. 
Result so far: 3024.0
If we subtract 336 from 365, we get 29.
Bring next digit (4) of the dividend behind the 29 and repeat the process: 294 / 84

Moving on to step 7:
The number 84 fits into 294 3 times, leaving a remainder of 42.
Use 3 as the next digit of our solution. 
Result so far: 30243.0
Deduct 252 from 294 and we're left with 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 84

On to step 8:
421 divided by 84 is 5 with a remainder of 1.
Put 5 as the next digit of the answer. 
Result so far: 302435.0
If we take 420 away from 421, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 9:
10 divided by 84 is 0 with a remainder of 10.
The number 0 becomes the next digit in our result. 
Result so far: 302435.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 10:
If we divide 100 by 84, we get 1 and a remainder of 16.
The next digit of our result is 1. 
Result so far: 302435.01
Subtract 84 from 100 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 11:
If we divide 160 by 84, we get 1 and a remainder of 76.
The number 1 becomes the next digit in our result. 
Result so far: 302435.011
If we take 84 away from 160, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

After the division, we end up with 302435.011 and a remainder of 0.0076.