We're dividing 61398363 by 511 
The aim is to understand the frequency of 511 in 61398363.

Going ahead to step 1:
6 divided by 511 is 0 with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Include the next digit (1) from the dividend after 6, then repeat: 61 / 511

Step 2:
511 goes into 61 0 times with a remainder of 61.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 61 and we're left with 61.
Fetch the next digit (3) from the dividend, attach it to 61 and continue: 613 / 511

Advancing to step 3:
613 divided by 511 is 1 with a remainder of 102.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 102 after subtracting 511 from 613.
Grab the next digit (9) from the dividend, add it to 102, then carry on: 1029 / 511

Step 4:
511 goes into 1029 2 times with a remainder of 7.
Write down 2 as next digit of the result. 
Result so far: 12.0
Subtracting 1022 from 1029 leaves us with 7.
Fetch the next digit (8) from the dividend, attach it to 7 and continue: 78 / 511

Step 5:
511 goes into 78 0 times with a remainder of 78.
The number 0 becomes the next digit in our result. 
Result so far: 120.0
Deduct 0 from 78 and we're left with 78.
Fetch the next digit (3) from the dividend, attach it to 78 and continue: 783 / 511

Let's proceed to step 6:
511 goes into 783 1 times with a remainder of 272.
The number 1 becomes the next digit in our result. 
Result so far: 1201.0
Subtract 511 from 783 to get 272.
Take the next digit (6) from the dividend and append it to 272, then repeat: 2726 / 511

Step 7:
2726 divided by 511 is 5 with a remainder of 171.
The next digit of our result is 5. 
Result so far: 12015.0
If we take 2555 away from 2726, we end up with 171.
Take the next digit (3) from the dividend and append it to 171, then repeat: 1713 / 511

Step 8:
If we divide 1713 by 511, we get 3 and a remainder of 180.
Record the quotient 3 as the next digit in the result. 
Result so far: 120153.0
If we take 1533 away from 1713, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

On to step 9:
If we divide 1800 by 511, we get 3 and a remainder of 267.
Use 3 as the next digit of our solution. 
Result so far: 120153.3
The remainder is 267 after subtracting 1533 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2670, and continue the process.

Moving on to step 10:
If we divide 2670 by 511, we get 5 and a remainder of 115.
Use 5 as the next digit of our solution. 
Result so far: 120153.35
The remainder is 115 after subtracting 2555 from 2670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

On to step 11:
When dividing 1150 by 511, we get 2 with a remainder of 128.
Record the quotient 2 as the next digit in the result. 
Result so far: 120153.352
If we subtract 1022 from 1150, we get 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Going ahead to step 12:
If we divide 1280 by 511, we get 2 and a remainder of 258.
Record the quotient 2 as the next digit in the result. 
Result so far: 120153.3522
The remainder is 258 after subtracting 1022 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2580, and continue the process.

The quotient of the division is 120153.3522, and the remainder is 0.00258.