We're dividing 66725489 by 617 
The aim is to understand the frequency of 617 in 66725489.

Going ahead to step 1:
The number 617 fits into 6 0 times, leaving a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 617

Moving on to step 2:
617 goes into 66 0 times with a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Fetch the next digit (7) from the dividend, attach it to 66 and continue: 667 / 617

Advancing to step 3:
667 divided by 617 is 1 with a remainder of 50.
The next digit of our result is 1. 
Result so far: 1.0
If we take 617 away from 667, we end up with 50.
Include the next digit (2) from the dividend after 50, then repeat: 502 / 617

On to step 4:
The number 617 fits into 502 0 times, leaving a remainder of 502.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
Deduct 0 from 502 and we're left with 502.
Fetch the next digit (5) from the dividend, attach it to 502 and continue: 5025 / 617

Moving on to step 5:
The number 617 fits into 5025 8 times, leaving a remainder of 89.
The next digit of our result is 8. 
Result so far: 108.0
Deduct 4936 from 5025 and we're left with 89.
Bring next digit (4) of the dividend behind the 89 and repeat the process: 894 / 617

Going ahead to step 6:
When dividing 894 by 617, we get 1 with a remainder of 277.
Put 1 as the next digit of the answer. 
Result so far: 1081.0
If we take 617 away from 894, we end up with 277.
Include the next digit (8) from the dividend after 277, then repeat: 2778 / 617

Let's proceed to step 7:
The number 617 fits into 2778 4 times, leaving a remainder of 310.
The number 4 becomes the next digit in our result. 
Result so far: 10814.0
Deduct 2468 from 2778 and we're left with 310.
Append the next digit (9) from the dividend to 310 and continue with: 3109 / 617

Advancing to step 8:
The number 617 fits into 3109 5 times, leaving a remainder of 24.
The number 5 becomes the next digit in our result. 
Result so far: 108145.0
Deduct 3085 from 3109 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
240 divided by 617 is 0 with a remainder of 240.
Put 0 as the next digit of the answer. 
Result so far: 108145.0
If we subtract 0 from 240, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Going ahead to step 10:
617 goes into 2400 3 times with a remainder of 549.
Put 3 as the next digit of the answer. 
Result so far: 108145.03
If we subtract 1851 from 2400, we get 549.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5490, and continue the process.

Moving on to step 11:
The number 617 fits into 5490 8 times, leaving a remainder of 554.
The next digit of our result is 8. 
Result so far: 108145.038
If we subtract 4936 from 5490, we get 554.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5540, and continue the process.

Step 12:
When dividing 5540 by 617, we get 8 with a remainder of 604.
Use 8 as the next digit of our solution. 
Result so far: 108145.0388
If we subtract 4936 from 5540, we get 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Our division results in 108145.0388 with a remaining 0.00604.