We divide 66605454 by 331
The aim is to understand the frequency of 331 in 66605454.

Step 1:
When dividing 6 by 331, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 331

Step 2:
The number 331 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Include the next digit (6) from the dividend after 66, then repeat: 666 / 331

Going ahead to step 3:
When dividing 666 by 331, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 2.0
The remainder is 4 after subtracting 662 from 666.
Take the next digit (0) from the dividend and append it to 4, then repeat: 40 / 331

Moving on to step 4:
331 goes into 40 0 times with a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 40 to get 40.
Grab the next digit (5) from the dividend, add it to 40, then carry on: 405 / 331

Advancing to step 5:
The number 331 fits into 405 1 times, leaving a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 201.0
Deduct 331 from 405 and we're left with 74.
Bring next digit (4) of the dividend behind the 74 and repeat the process: 744 / 331

Step 6:
744 divided by 331 is 2 with a remainder of 82.
The next digit of our result is 2. 
Result so far: 2012.0
Subtracting 662 from 744 leaves us with 82.
Grab the next digit (5) from the dividend, add it to 82, then carry on: 825 / 331

Going ahead to step 7:
The number 331 fits into 825 2 times, leaving a remainder of 163.
The number 2 becomes the next digit in our result. 
Result so far: 20122.0
Deduct 662 from 825 and we're left with 163.
Append the next digit (4) from the dividend to 163 and continue with: 1634 / 331

Step 8:
The number 331 fits into 1634 4 times, leaving a remainder of 310.
Put 4 as the next digit of the answer. 
Result so far: 201224.0
Deduct 1324 from 1634 and we're left with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 9:
If we divide 3100 by 331, we get 9 and a remainder of 121.
Write down 9 as next digit of the result. 
Result so far: 201224.9
Subtracting 2979 from 3100 leaves us with 121.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1210, and continue the process.

On to step 10:
331 goes into 1210 3 times with a remainder of 217.
Use 3 as the next digit of our solution. 
Result so far: 201224.93
If we subtract 993 from 1210, we get 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

Step 11:
The number 331 fits into 2170 6 times, leaving a remainder of 184.
Record the quotient 6 as the next digit in the result. 
Result so far: 201224.936
Deduct 1986 from 2170 and we're left with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Let's proceed to step 12:
The number 331 fits into 1840 5 times, leaving a remainder of 185.
The number 5 becomes the next digit in our result. 
Result so far: 201224.9365
The remainder is 185 after subtracting 1655 from 1840.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

On to step 13:
If we divide 1850 by 331, we get 5 and a remainder of 195.
Use 5 as the next digit of our solution. 
Result so far: 201224.93655
Deduct 1655 from 1850 and we're left with 195.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Our division results in 201224.93655 with a remaining 0.000195.