We're dividing 66344982 by 661 
The aim is to understand the frequency of 661 in 66344982.

Moving on to step 1:
If we divide 6 by 661, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 661

Going ahead to step 2:
661 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Fetch the next digit (3) from the dividend, attach it to 66 and continue: 663 / 661

Let's proceed to step 3:
661 can be fit into 663 1 times, resulting in a remainder of 2.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 661 from 663 and we're left with 2.
Append the next digit (4) from the dividend to 2 and continue with: 24 / 661

Going ahead to step 4:
661 goes into 24 0 times with a remainder of 24.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 24 to get 24.
Include the next digit (4) from the dividend after 24, then repeat: 244 / 661

Let's proceed to step 5:
When dividing 244 by 661, we get 0 with a remainder of 244.
Put 0 as the next digit of the answer. 
Result so far: 100.0
If we subtract 0 from 244, we get 244.
Append the next digit (9) from the dividend to 244 and continue with: 2449 / 661

Advancing to step 6:
If we divide 2449 by 661, we get 3 and a remainder of 466.
Put 3 as the next digit of the answer. 
Result so far: 1003.0
If we take 1983 away from 2449, we end up with 466.
Bring next digit (8) of the dividend behind the 466 and repeat the process: 4668 / 661

Step 7:
661 goes into 4668 7 times with a remainder of 41.
Put 7 as the next digit of the answer. 
Result so far: 10037.0
Subtracting 4627 from 4668 leaves us with 41.
Include the next digit (2) from the dividend after 41, then repeat: 412 / 661

Step 8:
661 can be fit into 412 0 times, resulting in a remainder of 412.
The next digit of our result is 0. 
Result so far: 100370.0
Subtracting 0 from 412 leaves us with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Let's proceed to step 9:
661 can be fit into 4120 6 times, resulting in a remainder of 154.
Use 6 as the next digit of our solution. 
Result so far: 100370.6
If we take 3966 away from 4120, we end up with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

On to step 10:
661 goes into 1540 2 times with a remainder of 218.
The next digit of our result is 2. 
Result so far: 100370.62
The remainder is 218 after subtracting 1322 from 1540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

On to step 11:
661 goes into 2180 3 times with a remainder of 197.
The next digit of our result is 3. 
Result so far: 100370.623
The remainder is 197 after subtracting 1983 from 2180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Going ahead to step 12:
When dividing 1970 by 661, we get 2 with a remainder of 648.
Record the quotient 2 as the next digit in the result. 
Result so far: 100370.6232
Deduct 1322 from 1970 and we're left with 648.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6480, and continue the process.

Let's proceed to step 13:
If we divide 6480 by 661, we get 9 and a remainder of 531.
Write down 9 as next digit of the result. 
Result so far: 100370.62329
Subtract 5949 from 6480 to get 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

On to step 14:
The number 661 fits into 5310 8 times, leaving a remainder of 22.
Use 8 as the next digit of our solution. 
Result so far: 100370.623298
Subtract 5288 from 5310 to get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Moving on to step 15:
661 can be fit into 220 0 times, resulting in a remainder of 220.
Use 0 as the next digit of our solution. 
Result so far: 100370.623298
Subtracting 0 from 220 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 16:
When dividing 2200 by 661, we get 3 with a remainder of 217.
Record the quotient 3 as the next digit in the result. 
Result so far: 100370.62329803
If we take 1983 away from 2200, we end up with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

In conclusion, the division gives 100370.62329803 with a balance of 2.17e-07.