We're dividing 51228225 by 603 
The aim is to understand the frequency of 603 in 51228225.

Advancing to step 1:
The number 603 fits into 5 0 times, leaving a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 603

Let's proceed to step 2:
When dividing 51 by 603, we get 0 with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 51 leaves us with 51.
Append the next digit (2) from the dividend to 51 and continue with: 512 / 603

Moving on to step 3:
512 divided by 603 is 0 with a remainder of 512.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 512 leaves us with 512.
Include the next digit (2) from the dividend after 512, then repeat: 5122 / 603

Let's proceed to step 4:
When dividing 5122 by 603, we get 8 with a remainder of 298.
The number 8 becomes the next digit in our result. 
Result so far: 8.0
The remainder is 298 after subtracting 4824 from 5122.
Grab the next digit (8) from the dividend, add it to 298, then carry on: 2988 / 603

Advancing to step 5:
2988 divided by 603 is 4 with a remainder of 576.
Put 4 as the next digit of the answer. 
Result so far: 84.0
If we subtract 2412 from 2988, we get 576.
Bring next digit (2) of the dividend behind the 576 and repeat the process: 5762 / 603

Going ahead to step 6:
If we divide 5762 by 603, we get 9 and a remainder of 335.
Record the quotient 9 as the next digit in the result. 
Result so far: 849.0
Subtracting 5427 from 5762 leaves us with 335.
Fetch the next digit (2) from the dividend, attach it to 335 and continue: 3352 / 603

Moving on to step 7:
603 can be fit into 3352 5 times, resulting in a remainder of 337.
The number 5 becomes the next digit in our result. 
Result so far: 8495.0
Deduct 3015 from 3352 and we're left with 337.
Grab the next digit (5) from the dividend, add it to 337, then carry on: 3375 / 603

Moving on to step 8:
603 can be fit into 3375 5 times, resulting in a remainder of 360.
The next digit of our result is 5. 
Result so far: 84955.0
Subtract 3015 from 3375 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.

Advancing to step 9:
When dividing 3600 by 603, we get 5 with a remainder of 585.
Record the quotient 5 as the next digit in the result. 
Result so far: 84955.5
The remainder is 585 after subtracting 3015 from 3600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Step 10:
5850 divided by 603 is 9 with a remainder of 423.
Put 9 as the next digit of the answer. 
Result so far: 84955.59
The remainder is 423 after subtracting 5427 from 5850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

On to step 11:
603 can be fit into 4230 7 times, resulting in a remainder of 9.
The next digit of our result is 7. 
Result so far: 84955.597
Deduct 4221 from 4230 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Step 12:
If we divide 90 by 603, we get 0 and a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 84955.597
If we subtract 0 from 90, we get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Let's proceed to step 13:
603 can be fit into 900 1 times, resulting in a remainder of 297.
The number 1 becomes the next digit in our result. 
Result so far: 84955.59701
Subtract 603 from 900 to get 297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2970, and continue the process.

Let's proceed to step 14:
2970 divided by 603 is 4 with a remainder of 558.
The number 4 becomes the next digit in our result. 
Result so far: 84955.597014
Deduct 2412 from 2970 and we're left with 558.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5580, and continue the process.

Going ahead to step 15:
If we divide 5580 by 603, we get 9 and a remainder of 153.
Use 9 as the next digit of our solution. 
Result so far: 84955.5970149
Subtracting 5427 from 5580 leaves us with 153.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1530, and continue the process.

Advancing to step 16:
If we divide 1530 by 603, we get 2 and a remainder of 324.
The next digit of our result is 2. 
Result so far: 84955.59701492
If we subtract 1206 from 1530, we get 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

After the division, we end up with 84955.59701492 and a remainder of 3.24e-07.