We're dividing 51258662 by 825 
The aim is to understand the frequency of 825 in 51258662.

Going ahead to step 1:
The number 825 fits into 5 0 times, leaving a remainder of 5.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 825

Advancing to step 2:
825 can be fit into 51 0 times, resulting in a remainder of 51.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 51, we end up with 51.
Grab the next digit (2) from the dividend, add it to 51, then carry on: 512 / 825

Going ahead to step 3:
If we divide 512 by 825, we get 0 and a remainder of 512.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 512 to get 512.
Fetch the next digit (5) from the dividend, attach it to 512 and continue: 5125 / 825

Moving on to step 4:
If we divide 5125 by 825, we get 6 and a remainder of 175.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
If we subtract 4950 from 5125, we get 175.
Bring next digit (8) of the dividend behind the 175 and repeat the process: 1758 / 825

Step 5:
The number 825 fits into 1758 2 times, leaving a remainder of 108.
The number 2 becomes the next digit in our result. 
Result so far: 62.0
The remainder is 108 after subtracting 1650 from 1758.
Take the next digit (6) from the dividend and append it to 108, then repeat: 1086 / 825

Going ahead to step 6:
The number 825 fits into 1086 1 times, leaving a remainder of 261.
Use 1 as the next digit of our solution. 
Result so far: 621.0
If we subtract 825 from 1086, we get 261.
Include the next digit (6) from the dividend after 261, then repeat: 2616 / 825

On to step 7:
When dividing 2616 by 825, we get 3 with a remainder of 141.
The number 3 becomes the next digit in our result. 
Result so far: 6213.0
If we subtract 2475 from 2616, we get 141.
Bring next digit (2) of the dividend behind the 141 and repeat the process: 1412 / 825

On to step 8:
The number 825 fits into 1412 1 times, leaving a remainder of 587.
The next digit of our result is 1. 
Result so far: 62131.0
Deduct 825 from 1412 and we're left with 587.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5870, and continue the process.

Going ahead to step 9:
5870 divided by 825 is 7 with a remainder of 95.
Record the quotient 7 as the next digit in the result. 
Result so far: 62131.7
If we subtract 5775 from 5870, we get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Let's proceed to step 10:
When dividing 950 by 825, we get 1 with a remainder of 125.
The next digit of our result is 1. 
Result so far: 62131.71
If we subtract 825 from 950, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Going ahead to step 11:
The number 825 fits into 1250 1 times, leaving a remainder of 425.
The number 1 becomes the next digit in our result. 
Result so far: 62131.711
The remainder is 425 after subtracting 825 from 1250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

The final outcome is 62131.711, with a leftover of 0.0425.