We're dividing 66450617 by 739 
The aim is to understand the frequency of 739 in 66450617.

Moving on to step 1:
If we divide 6 by 739, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Take the next digit (6) from the dividend and append it to 6, then repeat: 66 / 739

Advancing to step 2:
739 goes into 66 0 times with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Bring next digit (4) of the dividend behind the 66 and repeat the process: 664 / 739

Step 3:
664 divided by 739 is 0 with a remainder of 664.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 664, we end up with 664.
Fetch the next digit (5) from the dividend, attach it to 664 and continue: 6645 / 739

Advancing to step 4:
If we divide 6645 by 739, we get 8 and a remainder of 733.
The next digit of our result is 8. 
Result so far: 8.0
Subtract 5912 from 6645 to get 733.
Fetch the next digit (0) from the dividend, attach it to 733 and continue: 7330 / 739

Let's proceed to step 5:
739 goes into 7330 9 times with a remainder of 679.
The number 9 becomes the next digit in our result. 
Result so far: 89.0
Deduct 6651 from 7330 and we're left with 679.
Grab the next digit (6) from the dividend, add it to 679, then carry on: 6796 / 739

Moving on to step 6:
When dividing 6796 by 739, we get 9 with a remainder of 145.
Use 9 as the next digit of our solution. 
Result so far: 899.0
The remainder is 145 after subtracting 6651 from 6796.
Bring next digit (1) of the dividend behind the 145 and repeat the process: 1451 / 739

Going ahead to step 7:
When dividing 1451 by 739, we get 1 with a remainder of 712.
Put 1 as the next digit of the answer. 
Result so far: 8991.0
Deduct 739 from 1451 and we're left with 712.
Take the next digit (7) from the dividend and append it to 712, then repeat: 7127 / 739

Step 8:
739 goes into 7127 9 times with a remainder of 476.
Write down 9 as next digit of the result. 
Result so far: 89919.0
The remainder is 476 after subtracting 6651 from 7127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4760, and continue the process.

On to step 9:
The number 739 fits into 4760 6 times, leaving a remainder of 326.
Record the quotient 6 as the next digit in the result. 
Result so far: 89919.6
If we take 4434 away from 4760, we end up with 326.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3260, and continue the process.

Going ahead to step 10:
The number 739 fits into 3260 4 times, leaving a remainder of 304.
The next digit of our result is 4. 
Result so far: 89919.64
If we subtract 2956 from 3260, we get 304.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3040, and continue the process.

Advancing to step 11:
3040 divided by 739 is 4 with a remainder of 84.
The next digit of our result is 4. 
Result so far: 89919.644
Deduct 2956 from 3040 and we're left with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

After the division, we end up with 89919.644 and a remainder of 0.0084.