2520968 divided by 454 
The aim is to understand the frequency of 454 in 2520968.

Step 1:
When dividing 2 by 454, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 454

Advancing to step 2:
25 divided by 454 is 0 with a remainder of 25.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 25, we end up with 25.
Grab the next digit (2) from the dividend, add it to 25, then carry on: 252 / 454

Moving on to step 3:
If we divide 252 by 454, we get 0 and a remainder of 252.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 252 and we're left with 252.
Grab the next digit (0) from the dividend, add it to 252, then carry on: 2520 / 454

Advancing to step 4:
If we divide 2520 by 454, we get 5 and a remainder of 250.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
Subtracting 2270 from 2520 leaves us with 250.
Grab the next digit (9) from the dividend, add it to 250, then carry on: 2509 / 454

Going ahead to step 5:
When dividing 2509 by 454, we get 5 with a remainder of 239.
Use 5 as the next digit of our solution. 
Result so far: 55.0
The remainder is 239 after subtracting 2270 from 2509.
Append the next digit (6) from the dividend to 239 and continue with: 2396 / 454

Going ahead to step 6:
When dividing 2396 by 454, we get 5 with a remainder of 126.
Record the quotient 5 as the next digit in the result. 
Result so far: 555.0
Deduct 2270 from 2396 and we're left with 126.
Grab the next digit (8) from the dividend, add it to 126, then carry on: 1268 / 454

Advancing to step 7:
454 can be fit into 1268 2 times, resulting in a remainder of 360.
Write down 2 as next digit of the result. 
Result so far: 5552.0
Subtracting 908 from 1268 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.

On to step 8:
When dividing 3600 by 454, we get 7 with a remainder of 422.
Put 7 as the next digit of the answer. 
Result so far: 5552.7
Deduct 3178 from 3600 and we're left with 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Let's proceed to step 9:
The number 454 fits into 4220 9 times, leaving a remainder of 134.
Use 9 as the next digit of our solution. 
Result so far: 5552.79
Deduct 4086 from 4220 and we're left with 134.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1340, and continue the process.

Moving on to step 10:
1340 divided by 454 is 2 with a remainder of 432.
Use 2 as the next digit of our solution. 
Result so far: 5552.792
The remainder is 432 after subtracting 908 from 1340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4320, and continue the process.

On to step 11:
If we divide 4320 by 454, we get 9 and a remainder of 234.
Use 9 as the next digit of our solution. 
Result so far: 5552.7929
If we take 4086 away from 4320, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Going ahead to step 12:
When dividing 2340 by 454, we get 5 with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 5552.79295
If we subtract 2270 from 2340, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 13:
454 can be fit into 700 1 times, resulting in a remainder of 246.
Record the quotient 1 as the next digit in the result. 
Result so far: 5552.792951
If we take 454 away from 700, we end up with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 14:
454 can be fit into 2460 5 times, resulting in a remainder of 190.
The number 5 becomes the next digit in our result. 
Result so far: 5552.7929515
If we take 2270 away from 2460, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Let's proceed to step 15:
454 can be fit into 1900 4 times, resulting in a remainder of 84.
Put 4 as the next digit of the answer. 
Result so far: 5552.79295154
Deduct 1816 from 1900 and we're left 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.

The final result is 5552.79295154 with a remainder of 8.4e-08.