We look at the division of 7749269 by 505 
The aim is to understand the frequency of 505 in 7749269.

Step 1:
505 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (7) from the dividend, add it to 7, then carry on: 77 / 505

Going ahead to step 2:
If we divide 77 by 505, we get 0 and a remainder of 77.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Fetch the next digit (4) from the dividend, attach it to 77 and continue: 774 / 505

Going ahead to step 3:
505 goes into 774 1 times with a remainder of 269.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 505 from 774 and we're left with 269.
Take the next digit (9) from the dividend and append it to 269, then repeat: 2699 / 505

Step 4:
2699 divided by 505 is 5 with a remainder of 174.
Record the quotient 5 as the next digit in the result. 
Result so far: 15.0
If we take 2525 away from 2699, we end up with 174.
Fetch the next digit (2) from the dividend, attach it to 174 and continue: 1742 / 505

Advancing to step 5:
The number 505 fits into 1742 3 times, leaving a remainder of 227.
Write down 3 as next digit of the result. 
Result so far: 153.0
If we subtract 1515 from 1742, we get 227.
Bring next digit (6) of the dividend behind the 227 and repeat the process: 2276 / 505

Let's proceed to step 6:
505 can be fit into 2276 4 times, resulting in a remainder of 256.
The number 4 becomes the next digit in our result. 
Result so far: 1534.0
Subtracting 2020 from 2276 leaves us with 256.
Append the next digit (9) from the dividend to 256 and continue with: 2569 / 505

Moving on to step 7:
The number 505 fits into 2569 5 times, leaving a remainder of 44.
Use 5 as the next digit of our solution. 
Result so far: 15345.0
The remainder is 44 after subtracting 2525 from 2569.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Moving on to step 8:
If we divide 440 by 505, we get 0 and a remainder of 440.
Put 0 as the next digit of the answer. 
Result so far: 15345.0
Subtract 0 from 440 to get 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

On to step 9:
505 goes into 4400 8 times with a remainder of 360.
Write down 8 as next digit of the result. 
Result so far: 15345.08
Subtract 4040 from 4400 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 10:
505 goes into 3600 7 times with a remainder of 65.
The number 7 becomes the next digit in our result. 
Result so far: 15345.087
If we take 3535 away from 3600, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 11:
When dividing 650 by 505, we get 1 with a remainder of 145.
Use 1 as the next digit of our solution. 
Result so far: 15345.0871
Deduct 505 from 650 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

Advancing to step 12:
1450 divided by 505 is 2 with a remainder of 440.
Put 2 as the next digit of the answer. 
Result so far: 15345.08712
Deduct 1010 from 1450 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Let's proceed to step 13:
505 goes into 4400 8 times with a remainder of 360.
Write down 8 as next digit of the result. 
Result so far: 15345.087128
If we take 4040 away from 4400, we end up with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 14:
The number 505 fits into 3600 7 times, leaving a remainder of 65.
Write down 7 as next digit of the result. 
Result so far: 15345.0871287
The remainder is 65 after subtracting 3535 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 15:
The number 505 fits into 650 1 times, leaving a remainder of 145.
Put 1 as the next digit of the answer. 
Result so far: 15345.08712871
Deduct 505 from 650 and we're left with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

After the division, we end up with 15345.08712871 and a remainder of 1.45e-07.