54751453 ÷ 503 
The aim is to understand the frequency of 503 in 54751453.

Going ahead to step 1:
If we divide 5 by 503, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (4) from the dividend after 5, then repeat: 54 / 503

Step 2:
503 can be fit into 54 0 times, resulting in a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 54 after subtracting 0 from 54.
Bring next digit (7) of the dividend behind the 54 and repeat the process: 547 / 503

Moving on to step 3:
The number 503 fits into 547 1 times, leaving a remainder of 44.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we subtract 503 from 547, we get 44.
Include the next digit (5) from the dividend after 44, then repeat: 445 / 503

On to step 4:
The number 503 fits into 445 0 times, leaving a remainder of 445.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 445 and we're left with 445.
Append the next digit (1) from the dividend to 445 and continue with: 4451 / 503

Let's proceed to step 5:
503 can be fit into 4451 8 times, resulting in a remainder of 427.
The next digit of our result is 8. 
Result so far: 108.0
Deduct 4024 from 4451 and we're left with 427.
Include the next digit (4) from the dividend after 427, then repeat: 4274 / 503

Going ahead to step 6:
If we divide 4274 by 503, we get 8 and a remainder of 250.
The next digit of our result is 8. 
Result so far: 1088.0
If we subtract 4024 from 4274, we get 250.
Take the next digit (5) from the dividend and append it to 250, then repeat: 2505 / 503

On to step 7:
If we divide 2505 by 503, we get 4 and a remainder of 493.
Put 4 as the next digit of the answer. 
Result so far: 10884.0
Subtract 2012 from 2505 to get 493.
Grab the next digit (3) from the dividend, add it to 493, then carry on: 4933 / 503

On to step 8:
If we divide 4933 by 503, we get 9 and a remainder of 406.
The next digit of our result is 9. 
Result so far: 108849.0
Deduct 4527 from 4933 and we're left with 406.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4060, and continue the process.

Advancing to step 9:
503 goes into 4060 8 times with a remainder of 36.
Put 8 as the next digit of the answer. 
Result so far: 108849.8
If we subtract 4024 from 4060, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 10:
360 divided by 503 is 0 with a remainder of 360.
Write down 0 as next digit of the result. 
Result so far: 108849.8
The remainder is 360 after subtracting 0 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 11:
3600 divided by 503 is 7 with a remainder of 79.
The number 7 becomes the next digit in our result. 
Result so far: 108849.807
Deduct 3521 from 3600 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

Step 12:
When dividing 790 by 503, we get 1 with a remainder of 287.
The next digit of our result is 1. 
Result so far: 108849.8071
If we subtract 503 from 790, we get 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Let's proceed to step 13:
If we divide 2870 by 503, we get 5 and a remainder of 355.
Use 5 as the next digit of our solution. 
Result so far: 108849.80715
If we take 2515 away from 2870, we end up with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

On to step 14:
If we divide 3550 by 503, we get 7 and a remainder of 29.
Use 7 as the next digit of our solution. 
Result so far: 108849.807157
Subtract 3521 from 3550 to get 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 15:
503 can be fit into 290 0 times, resulting in a remainder of 290.
Put 0 as the next digit of the answer. 
Result so far: 108849.807157
Subtract 0 from 290 to get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Step 16:
2900 divided by 503 is 5 with a remainder of 385.
Write down 5 as next digit of the result. 
Result so far: 108849.80715705
If we subtract 2515 from 2900, we get 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

The final result is 108849.80715705 with a remainder of 3.85e-07.