64551840 divided by 625 
The aim is to understand the frequency of 625 in 64551840.

Advancing to step 1:
625 can be fit into 6 0 times, resulting in 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.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 625

Advancing to step 2:
If we divide 64 by 625, we get 0 and a remainder of 64.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 64 after subtracting 0 from 64.
Include the next digit (5) from the dividend after 64, then repeat: 645 / 625

Moving on to step 3:
When dividing 645 by 625, we get 1 with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 625 away from 645, we end up with 20.
Fetch the next digit (5) from the dividend, attach it to 20 and continue: 205 / 625

Going ahead to step 4:
205 divided by 625 is 0 with a remainder of 205.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 205 leaves us with 205.
Append the next digit (1) from the dividend to 205 and continue with: 2051 / 625

On to step 5:
When dividing 2051 by 625, we get 3 with a remainder of 176.
The next digit of our result is 3. 
Result so far: 103.0
Subtracting 1875 from 2051 leaves us with 176.
Append the next digit (8) from the dividend to 176 and continue with: 1768 / 625

Step 6:
The number 625 fits into 1768 2 times, leaving a remainder of 518.
Write down 2 as next digit of the result. 
Result so far: 1032.0
Deduct 1250 from 1768 and we're left with 518.
Append the next digit (4) from the dividend to 518 and continue with: 5184 / 625

On to step 7:
625 goes into 5184 8 times with a remainder of 184.
The next digit of our result is 8. 
Result so far: 10328.0
The remainder is 184 after subtracting 5000 from 5184.
Take the next digit (0) from the dividend and append it to 184, then repeat: 1840 / 625

On to step 8:
625 can be fit into 1840 2 times, resulting in a remainder of 590.
Use 2 as the next digit of our solution. 
Result so far: 103282.0
Deduct 1250 from 1840 and we're left with 590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Let's proceed to step 9:
625 goes into 5900 9 times with a remainder of 275.
The number 9 becomes the next digit in our result. 
Result so far: 103282.9
Subtracting 5625 from 5900 leaves us with 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Going ahead to step 10:
625 can be fit into 2750 4 times, resulting in a remainder of 250.
Use 4 as the next digit of our solution. 
Result so far: 103282.94
If we take 2500 away from 2750, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

On to step 11:
When dividing 2500 by 625, we get 4 with a remainder of 0.
Put 4 as the next digit of the answer. 
Result so far: 103282.944
Deduct 2500 from 2500 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 103282.944 with a remaining 0.0.