We look at the division of 74826100 by 505 
The aim is to understand the frequency of 505 in 74826100.

On to step 1:
When dividing 7 by 505, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Append the next digit (4) from the dividend to 7 and continue with: 74 / 505

Advancing to step 2:
505 goes into 74 0 times with a remainder of 74.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 74 after subtracting 0 from 74.
Include the next digit (8) from the dividend after 74, then repeat: 748 / 505

Advancing to step 3:
If we divide 748 by 505, we get 1 and a remainder of 243.
The next digit of our result is 1. 
Result so far: 1.0
The remainder is 243 after subtracting 505 from 748.
Fetch the next digit (2) from the dividend, attach it to 243 and continue: 2432 / 505

Let's proceed to step 4:
505 goes into 2432 4 times with a remainder of 412.
The next digit of our result is 4. 
Result so far: 14.0
Subtracting 2020 from 2432 leaves us with 412.
Bring next digit (6) of the dividend behind the 412 and repeat the process: 4126 / 505

Step 5:
505 can be fit into 4126 8 times, resulting in a remainder of 86.
Put 8 as the next digit of the answer. 
Result so far: 148.0
Subtract 4040 from 4126 to get 86.
Append the next digit (1) from the dividend to 86 and continue with: 861 / 505

Advancing to step 6:
505 can be fit into 861 1 times, resulting in a remainder of 356.
Record the quotient 1 as the next digit in the result. 
Result so far: 1481.0
If we subtract 505 from 861, we get 356.
Take the next digit (0) from the dividend and append it to 356, then repeat: 3560 / 505

On to step 7:
505 goes into 3560 7 times with a remainder of 25.
Put 7 as the next digit of the answer. 
Result so far: 14817.0
Subtract 3535 from 3560 to get 25.
Fetch the next digit (0) from the dividend, attach it to 25 and continue: 250 / 505

Advancing to step 8:
The number 505 fits into 250 0 times, leaving a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 148170.0
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Advancing to step 9:
2500 divided by 505 is 4 with a remainder of 480.
The number 4 becomes the next digit in our result. 
Result so far: 148170.4
Deduct 2020 from 2500 and we're left with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Step 10:
505 can be fit into 4800 9 times, resulting in a remainder of 255.
Record the quotient 9 as the next digit in the result. 
Result so far: 148170.49
Deduct 4545 from 4800 and we're left with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Going ahead to step 11:
2550 divided by 505 is 5 with a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 148170.495
Subtracting 2525 from 2550 leaves us with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Step 12:
505 goes into 250 0 times with a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 148170.495
If we take 0 away from 250, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Going ahead to step 13:
The number 505 fits into 2500 4 times, leaving a remainder of 480.
Record the quotient 4 as the next digit in the result. 
Result so far: 148170.49504
Subtracting 2020 from 2500 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 14:
If we divide 4800 by 505, we get 9 and a remainder of 255.
Put 9 as the next digit of the answer. 
Result so far: 148170.495049
Deduct 4545 from 4800 and we're left with 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Step 15:
The number 505 fits into 2550 5 times, leaving a remainder of 25.
Use 5 as the next digit of our solution. 
Result so far: 148170.4950495
If we take 2525 away from 2550, we end up with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

On to step 16:
If we divide 250 by 505, we get 0 and a remainder of 250.
The number 0 becomes the next digit in our result. 
Result so far: 148170.4950495
Subtracting 0 from 250 leaves us with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Our division results in 148170.4950495 with a remaining 2.5e-07.