We look at the division of 40028378 by 454 
The aim is to understand the frequency of 454 in 40028378.

Going ahead to step 1:
The number 454 fits into 4 0 times, leaving a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (0) from the dividend to 4 and continue with: 40 / 454

Moving on to step 2:
454 goes into 40 0 times with a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 40 after subtracting 0 from 40.
Grab the next digit (0) from the dividend, add it to 40, then carry on: 400 / 454

Step 3:
If we divide 400 by 454, we get 0 and a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 400, we get 400.
Grab the next digit (2) from the dividend, add it to 400, then carry on: 4002 / 454

Let's proceed to step 4:
The number 454 fits into 4002 8 times, leaving a remainder of 370.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 3632 from 4002 leaves us with 370.
Take the next digit (8) from the dividend and append it to 370, then repeat: 3708 / 454

Advancing to step 5:
If we divide 3708 by 454, we get 8 and a remainder of 76.
The next digit of our result is 8. 
Result so far: 88.0
Subtracting 3632 from 3708 leaves us with 76.
Append the next digit (3) from the dividend to 76 and continue with: 763 / 454

Moving on to step 6:
454 goes into 763 1 times with a remainder of 309.
Put 1 as the next digit of the answer. 
Result so far: 881.0
Subtracting 454 from 763 leaves us with 309.
Fetch the next digit (7) from the dividend, attach it to 309 and continue: 3097 / 454

Advancing to step 7:
454 can be fit into 3097 6 times, resulting in a remainder of 373.
Use 6 as the next digit of our solution. 
Result so far: 8816.0
Deduct 2724 from 3097 and we're left with 373.
Bring next digit (8) of the dividend behind the 373 and repeat the process: 3738 / 454

Let's proceed to step 8:
454 goes into 3738 8 times with a remainder of 106.
Record the quotient 8 as the next digit in the result. 
Result so far: 88168.0
Subtracting 3632 from 3738 leaves us with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

On to step 9:
454 can be fit into 1060 2 times, resulting in a remainder of 152.
Write down 2 as next digit of the result. 
Result so far: 88168.2
If we take 908 away from 1060, we end up with 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

On to step 10:
The number 454 fits into 1520 3 times, leaving a remainder of 158.
Record the quotient 3 as the next digit in the result. 
Result so far: 88168.23
If we take 1362 away from 1520, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 11:
If we divide 1580 by 454, we get 3 and a remainder of 218.
Use 3 as the next digit of our solution. 
Result so far: 88168.233
If we take 1362 away from 1580, we end up with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

Our division results in 88168.233 with a remaining 0.0218.