We're dividing 51850220 by 605 
The aim is to understand the frequency of 605 in 51850220.

Going ahead to step 1:
5 divided by 605 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Include the next digit (1) from the dividend after 5, then repeat: 51 / 605

Going ahead to step 2:
51 divided by 605 is 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Fetch the next digit (8) from the dividend, attach it to 51 and continue: 518 / 605

Step 3:
The number 605 fits into 518 0 times, leaving a remainder of 518.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 518 and we're left with 518.
Take the next digit (5) from the dividend and append it to 518, then repeat: 5185 / 605

On to step 4:
5185 divided by 605 is 8 with a remainder of 345.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
If we take 4840 away from 5185, we end up with 345.
Grab the next digit (0) from the dividend, add it to 345, then carry on: 3450 / 605

Going ahead to step 5:
If we divide 3450 by 605, we get 5 and a remainder of 425.
The next digit of our result is 5. 
Result so far: 85.0
Subtracting 3025 from 3450 leaves us with 425.
Append the next digit (2) from the dividend to 425 and continue with: 4252 / 605

Let's proceed to step 6:
4252 divided by 605 is 7 with a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 857.0
If we take 4235 away from 4252, we end up with 17.
Take the next digit (2) from the dividend and append it to 17, then repeat: 172 / 605

Step 7:
605 goes into 172 0 times with a remainder of 172.
Put 0 as the next digit of the answer. 
Result so far: 8570.0
Subtracting 0 from 172 leaves us with 172.
Append the next digit (0) from the dividend to 172 and continue with: 1720 / 605

Moving on to step 8:
The number 605 fits into 1720 2 times, leaving a remainder of 510.
Write down 2 as next digit of the result. 
Result so far: 85702.0
The remainder is 510 after subtracting 1210 from 1720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Going ahead to step 9:
If we divide 5100 by 605, we get 8 and a remainder of 260.
The next digit of our result is 8. 
Result so far: 85702.8
If we take 4840 away from 5100, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 10:
The number 605 fits into 2600 4 times, leaving a remainder of 180.
The number 4 becomes the next digit in our result. 
Result so far: 85702.84
Subtracting 2420 from 2600 leaves us 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.

Let's proceed to step 11:
605 goes into 1800 2 times with a remainder of 590.
The number 2 becomes the next digit in our result. 
Result so far: 85702.842
If we subtract 1210 from 1800, we get 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Step 12:
605 goes into 5900 9 times with a remainder of 455.
Write down 9 as next digit of the result. 
Result so far: 85702.8429
The remainder is 455 after subtracting 5445 from 5900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Let's proceed to step 13:
When dividing 4550 by 605, we get 7 with a remainder of 315.
The next digit of our result is 7. 
Result so far: 85702.84297
If we take 4235 away from 4550, we end up with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Let's proceed to step 14:
605 can be fit into 3150 5 times, resulting in a remainder of 125.
The next digit of our result is 5. 
Result so far: 85702.842975
The remainder is 125 after subtracting 3025 from 3150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 15:
When dividing 1250 by 605, we get 2 with a remainder of 40.
Use 2 as the next digit of our solution. 
Result so far: 85702.8429752
If we take 1210 away from 1250, 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.

Advancing to step 16:
If we divide 400 by 605, we get 0 and a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 85702.8429752
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.

After the division, we end up with 85702.8429752 and a remainder of 4e-07.