We look at the division of 47420083 by 660 
The aim is to understand the frequency of 660 in 47420083.

Step 1:
660 goes into 4 0 times with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Bring next digit (7) of the dividend behind the 4 and repeat the process: 47 / 660

Step 2:
660 goes into 47 0 times with a remainder of 47.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 47 after subtracting 0 from 47.
Take the next digit (4) from the dividend and append it to 47, then repeat: 474 / 660

Moving on to step 3:
660 goes into 474 0 times with a remainder of 474.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 474 after subtracting 0 from 474.
Append the next digit (2) from the dividend to 474 and continue with: 4742 / 660

Let's proceed to step 4:
If we divide 4742 by 660, we get 7 and a remainder of 122.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Subtracting 4620 from 4742 leaves us with 122.
Include the next digit (0) from the dividend after 122, then repeat: 1220 / 660

Moving on to step 5:
If we divide 1220 by 660, we get 1 and a remainder of 560.
Record the quotient 1 as the next digit in the result. 
Result so far: 71.0
Subtracting 660 from 1220 leaves us with 560.
Bring next digit (0) of the dividend behind the 560 and repeat the process: 5600 / 660

Going ahead to step 6:
When dividing 5600 by 660, we get 8 with a remainder of 320.
The number 8 becomes the next digit in our result. 
Result so far: 718.0
If we subtract 5280 from 5600, we get 320.
Bring next digit (8) of the dividend behind the 320 and repeat the process: 3208 / 660

Step 7:
660 can be fit into 3208 4 times, resulting in a remainder of 568.
Use 4 as the next digit of our solution. 
Result so far: 7184.0
Subtracting 2640 from 3208 leaves us with 568.
Bring next digit (3) of the dividend behind the 568 and repeat the process: 5683 / 660

Advancing to step 8:
When dividing 5683 by 660, we get 8 with a remainder of 403.
Use 8 as the next digit of our solution. 
Result so far: 71848.0
If we take 5280 away from 5683, we end up with 403.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4030, and continue the process.

Advancing to step 9:
660 can be fit into 4030 6 times, resulting in a remainder of 70.
Put 6 as the next digit of the answer. 
Result so far: 71848.6
Deduct 3960 from 4030 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Let's proceed to step 10:
660 goes into 700 1 times with a remainder of 40.
Use 1 as the next digit of our solution. 
Result so far: 71848.61
Subtracting 660 from 700 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 11:
If we divide 400 by 660, we get 0 and a remainder of 400.
Record the quotient 0 as the next digit in the result. 
Result so far: 71848.61
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 12:
660 goes into 4000 6 times with a remainder of 40.
The number 6 becomes the next digit in our result. 
Result so far: 71848.6106
The remainder is 40 after subtracting 3960 from 4000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 13:
When dividing 400 by 660, we get 0 with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 71848.6106
If we subtract 0 from 400, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Going ahead to step 14:
The number 660 fits into 4000 6 times, leaving a remainder of 40.
Record the quotient 6 as the next digit in the result. 
Result so far: 71848.610606
Deduct 3960 from 4000 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 15:
The number 660 fits into 400 0 times, leaving a remainder of 400.
Write down 0 as next digit of the result. 
Result so far: 71848.610606
Deduct 0 from 400 and we're left with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 16:
The number 660 fits into 4000 6 times, leaving a remainder of 40.
Write down 6 as next digit of the result. 
Result so far: 71848.61060606
If we subtract 3960 from 4000, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Our division results in 71848.61060606 with a remaining 4e-08.