We look at the division of 51539180 by 625 
The aim is to understand the frequency of 625 in 51539180.

Moving on to step 1:
If we divide 5 by 625, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Bring next digit (1) of the dividend behind the 5 and repeat the process: 51 / 625

Step 2:
625 can be fit into 51 0 times, resulting in a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Grab the next digit (5) from the dividend, add it to 51, then carry on: 515 / 625

Advancing to step 3:
The number 625 fits into 515 0 times, leaving a remainder of 515.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 515 to get 515.
Grab the next digit (3) from the dividend, add it to 515, then carry on: 5153 / 625

On to step 4:
When dividing 5153 by 625, we get 8 with a remainder of 153.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 5000 from 5153, we get 153.
Include the next digit (9) from the dividend after 153, then repeat: 1539 / 625

Moving on to step 5:
When dividing 1539 by 625, we get 2 with a remainder of 289.
Put 2 as the next digit of the answer. 
Result so far: 82.0
If we subtract 1250 from 1539, we get 289.
Append the next digit (1) from the dividend to 289 and continue with: 2891 / 625

Step 6:
When dividing 2891 by 625, we get 4 with a remainder of 391.
Put 4 as the next digit of the answer. 
Result so far: 824.0
If we subtract 2500 from 2891, we get 391.
Grab the next digit (8) from the dividend, add it to 391, then carry on: 3918 / 625

Advancing to step 7:
The number 625 fits into 3918 6 times, leaving a remainder of 168.
Put 6 as the next digit of the answer. 
Result so far: 8246.0
If we take 3750 away from 3918, we end up with 168.
Fetch the next digit (0) from the dividend, attach it to 168 and continue: 1680 / 625

Let's proceed to step 8:
When dividing 1680 by 625, we get 2 with a remainder of 430.
Write down 2 as next digit of the result. 
Result so far: 82462.0
The remainder is 430 after subtracting 1250 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

On to step 9:
If we divide 4300 by 625, we get 6 and a remainder of 550.
The next digit of our result is 6. 
Result so far: 82462.6
If we subtract 3750 from 4300, we get 550.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5500, and continue the process.

Step 10:
625 can be fit into 5500 8 times, resulting in a remainder of 500.
The number 8 becomes the next digit in our result. 
Result so far: 82462.68
The remainder is 500 after subtracting 5000 from 5500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Step 11:
The number 625 fits into 5000 8 times, leaving a remainder of 0.
Write down 8 as next digit of the result. 
Result so far: 82462.688
If we subtract 5000 from 5000, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 82462.688 and a remainder of 0.0.