We look at the division of 3547924 by 505 
The aim is to understand the frequency of 505 in 3547924.

Step 1:
If we divide 3 by 505, we get 0 and a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 3 after subtracting 0 from 3.
Include the next digit (5) from the dividend after 3, then repeat: 35 / 505

Moving on to step 2:
35 divided by 505 is 0 with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 35, we end up with 35.
Take the next digit (4) from the dividend and append it to 35, then repeat: 354 / 505

Let's proceed to step 3:
When dividing 354 by 505, we get 0 with a remainder of 354.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 354 after subtracting 0 from 354.
Append the next digit (7) from the dividend to 354 and continue with: 3547 / 505

Going ahead to step 4:
505 goes into 3547 7 times with a remainder of 12.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we take 3535 away from 3547, we end up with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 505

On to step 5:
505 goes into 129 0 times with a remainder of 129.
Record the quotient 0 as the next digit in the result. 
Result so far: 70.0
Subtract 0 from 129 to get 129.
Take the next digit (2) from the dividend and append it to 129, then repeat: 1292 / 505

Advancing to step 6:
1292 divided by 505 is 2 with a remainder of 282.
The next digit of our result is 2. 
Result so far: 702.0
Deduct 1010 from 1292 and we're left with 282.
Include the next digit (4) from the dividend after 282, then repeat: 2824 / 505

Going ahead to step 7:
When dividing 2824 by 505, we get 5 with a remainder of 299.
Put 5 as the next digit of the answer. 
Result so far: 7025.0
Deduct 2525 from 2824 and we're left with 299.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2990, and continue the process.

Moving on to step 8:
505 can be fit into 2990 5 times, resulting in a remainder of 465.
Use 5 as the next digit of our solution. 
Result so far: 7025.5
Deduct 2525 from 2990 and we're left with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Advancing to step 9:
505 can be fit into 4650 9 times, resulting in a remainder of 105.
Use 9 as the next digit of our solution. 
Result so far: 7025.59
Subtract 4545 from 4650 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Step 10:
The number 505 fits into 1050 2 times, leaving a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 7025.592
Subtracting 1010 from 1050 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
If we divide 400 by 505, we get 0 and a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 7025.592
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Moving on to step 12:
If we divide 4000 by 505, we get 7 and a remainder of 465.
Write down 7 as next digit of the result. 
Result so far: 7025.59207
Subtracting 3535 from 4000 leaves us with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

Going ahead to step 13:
505 can be fit into 4650 9 times, resulting in a remainder of 105.
Record the quotient 9 as the next digit in the result. 
Result so far: 7025.592079
If we take 4545 away from 4650, we end up with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Moving on to step 14:
505 goes into 1050 2 times with a remainder of 40.
Put 2 as the next digit of the answer. 
Result so far: 7025.5920792
If we take 1010 away from 1050, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 15:
400 divided by 505 is 0 with a remainder of 400.
The number 0 becomes the next digit in our result. 
Result so far: 7025.5920792
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

After the division, we end up with 7025.5920792 and a remainder of 4e-07.