70280123 ÷ 454 
The aim is to understand the frequency of 454 in 70280123.

Step 1:
If we divide 7 by 454, we get 0 and a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (0) from the dividend to 7 and continue with: 70 / 454

Going ahead to step 2:
454 goes into 70 0 times with a remainder of 70.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 70 and we're left with 70.
Include the next digit (2) from the dividend after 70, then repeat: 702 / 454

Going ahead to step 3:
454 goes into 702 1 times with a remainder of 248.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 454 from 702 to get 248.
Bring next digit (8) of the dividend behind the 248 and repeat the process: 2488 / 454

On to step 4:
When dividing 2488 by 454, we get 5 with a remainder of 218.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtracting 2270 from 2488 leaves us with 218.
Include the next digit (0) from the dividend after 218, then repeat: 2180 / 454

Step 5:
If we divide 2180 by 454, we get 4 and a remainder of 364.
Write down 4 as next digit of the result. 
Result so far: 154.0
If we take 1816 away from 2180, we end up with 364.
Append the next digit (1) from the dividend to 364 and continue with: 3641 / 454

On to step 6:
The number 454 fits into 3641 8 times, leaving a remainder of 9.
The number 8 becomes the next digit in our result. 
Result so far: 1548.0
If we take 3632 away from 3641, we end up with 9.
Grab the next digit (2) from the dividend, add it to 9, then carry on: 92 / 454

Let's proceed to step 7:
454 can be fit into 92 0 times, resulting in a remainder of 92.
Write down 0 as next digit of the result. 
Result so far: 15480.0
If we take 0 away from 92, we end up with 92.
Fetch the next digit (3) from the dividend, attach it to 92 and continue: 923 / 454

Advancing to step 8:
The number 454 fits into 923 2 times, leaving a remainder of 15.
The next digit of our result is 2. 
Result so far: 154802.0
Deduct 908 from 923 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Let's proceed to step 9:
The number 454 fits into 150 0 times, leaving a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 154802.0
Subtract 0 from 150 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Step 10:
454 goes into 1500 3 times with a remainder of 138.
Use 3 as the next digit of our solution. 
Result so far: 154802.03
If we take 1362 away from 1500, we end up with 138.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1380, and continue the process.

Advancing to step 11:
454 can be fit into 1380 3 times, resulting in a remainder of 18.
Put 3 as the next digit of the answer. 
Result so far: 154802.033
If we take 1362 away from 1380, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

After the division, we end up with 154802.033 and a remainder of 0.0018.