We look at the division of 7248905 by 457 
The aim is to understand the frequency of 457 in 7248905.

Advancing to step 1:
When dividing 7 by 457, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 457

On to step 2:
When dividing 72 by 457, we get 0 with a remainder of 72.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 72 to get 72.
Grab the next digit (4) from the dividend, add it to 72, then carry on: 724 / 457

Going ahead to step 3:
The number 457 fits into 724 1 times, leaving a remainder of 267.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 457 from 724, we get 267.
Include the next digit (8) from the dividend after 267, then repeat: 2678 / 457

Advancing to step 4:
If we divide 2678 by 457, we get 5 and a remainder of 393.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
If we subtract 2285 from 2678, we get 393.
Fetch the next digit (9) from the dividend, attach it to 393 and continue: 3939 / 457

On to step 5:
457 goes into 3939 8 times with a remainder of 283.
The next digit of our result is 8. 
Result so far: 158.0
Subtract 3656 from 3939 to get 283.
Bring next digit (0) of the dividend behind the 283 and repeat the process: 2830 / 457

Advancing to step 6:
2830 divided by 457 is 6 with a remainder of 88.
Write down 6 as next digit of the result. 
Result so far: 1586.0
The remainder is 88 after subtracting 2742 from 2830.
Append the next digit (5) from the dividend to 88 and continue with: 885 / 457

Let's proceed to step 7:
The number 457 fits into 885 1 times, leaving a remainder of 428.
Record the quotient 1 as the next digit in the result. 
Result so far: 15861.0
Subtract 457 from 885 to get 428.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4280, and continue the process.

Step 8:
4280 divided by 457 is 9 with a remainder of 167.
Write down 9 as next digit of the result. 
Result so far: 15861.9
Subtracting 4113 from 4280 leaves us with 167.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1670, and continue the process.

Advancing to step 9:
457 goes into 1670 3 times with a remainder of 299.
Record the quotient 3 as the next digit in the result. 
Result so far: 15861.93
Subtract 1371 from 1670 to get 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Step 10:
The number 457 fits into 2990 6 times, leaving a remainder of 248.
Put 6 as the next digit of the answer. 
Result so far: 15861.936
The remainder is 248 after subtracting 2742 from 2990.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Let's proceed to step 11:
457 can be fit into 2480 5 times, resulting in a remainder of 195.
Record the quotient 5 as the next digit in the result. 
Result so far: 15861.9365
Subtracting 2285 from 2480 leaves us with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Let's proceed to step 12:
457 goes into 1950 4 times with a remainder of 122.
Record the quotient 4 as the next digit in the result. 
Result so far: 15861.93654
If we subtract 1828 from 1950, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

On to step 13:
The number 457 fits into 1220 2 times, leaving a remainder of 306.
Record the quotient 2 as the next digit in the result. 
Result so far: 15861.936542
If we take 914 away from 1220, we end up with 306.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3060, and continue the process.

On to step 14:
3060 divided by 457 is 6 with a remainder of 318.
The next digit of our result is 6. 
Result so far: 15861.9365426
The remainder is 318 after subtracting 2742 from 3060.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3180, and continue the process.

On to step 15:
If we divide 3180 by 457, we get 6 and a remainder of 438.
Use 6 as the next digit of our solution. 
Result so far: 15861.93654266
If we subtract 2742 from 3180, we get 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

The quotient of the division is 15861.93654266, and the remainder is 4.38e-07.