Let's divide 66631151 by 133
The aim is to understand the frequency of 133 in 66631151.

On to step 1:
133 can be fit into 6 0 times, resulting in a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 133

On to step 2:
The number 133 fits into 66 0 times, leaving a remainder of 66.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 66, we end up with 66.
Take the next digit (6) from the dividend and append it to 66, then repeat: 666 / 133

Step 3:
133 can be fit into 666 5 times, resulting in a remainder of 1.
The next digit of our result is 5. 
Result so far: 5.0
Deduct 665 from 666 and we're left with 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 133

Moving on to step 4:
133 can be fit into 13 0 times, resulting in a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 50.0
Subtract 0 from 13 to get 13.
Append the next digit (1) from the dividend to 13 and continue with: 131 / 133

Let's proceed to step 5:
The number 133 fits into 131 0 times, leaving a remainder of 131.
The next digit of our result is 0. 
Result so far: 500.0
Subtracting 0 from 131 leaves us with 131.
Bring next digit (1) of the dividend behind the 131 and repeat the process: 1311 / 133

Let's proceed to step 6:
133 can be fit into 1311 9 times, resulting in a remainder of 114.
Put 9 as the next digit of the answer. 
Result so far: 5009.0
Subtract 1197 from 1311 to get 114.
Take the next digit (5) from the dividend and append it to 114, then repeat: 1145 / 133

On to step 7:
133 can be fit into 1145 8 times, resulting in a remainder of 81.
Write down 8 as next digit of the result. 
Result so far: 50098.0
Subtracting 1064 from 1145 leaves us with 81.
Take the next digit (1) from the dividend and append it to 81, then repeat: 811 / 133

Let's proceed to step 8:
If we divide 811 by 133, we get 6 and a remainder of 13.
Put 6 as the next digit of the answer. 
Result so far: 500986.0
Subtract 798 from 811 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 9:
If we divide 130 by 133, we get 0 and a remainder of 130.
The next digit of our result is 0. 
Result so far: 500986.0
The remainder is 130 after subtracting 0 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

Step 10:
If we divide 1300 by 133, we get 9 and a remainder of 103.
Write down 9 as next digit of the result. 
Result so far: 500986.09
Deduct 1197 from 1300 and we're left with 103.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1030, and continue the process.

Advancing to step 11:
1030 divided by 133 is 7 with a remainder of 99.
Use 7 as the next digit of our solution. 
Result so far: 500986.097
If we take 931 away from 1030, we end up with 99.
Since there are no more digits in the dividend, we add a zero to the remainder making it 990, and continue the process.

Advancing to step 12:
The number 133 fits into 990 7 times, leaving a remainder of 59.
The next digit of our result is 7. 
Result so far: 500986.0977
Deduct 931 from 990 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

After the division, we end up with 500986.0977 and a remainder of 0.00059.