We're dividing 55405657 by 491 
The aim is to understand the frequency of 491 in 55405657.

Step 1:
The number 491 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Take the next digit (5) from the dividend and append it to 5, then repeat: 55 / 491

On to step 2:
491 goes into 55 0 times with a remainder of 55.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 55, we end up with 55.
Fetch the next digit (4) from the dividend, attach it to 55 and continue: 554 / 491

Let's proceed to step 3:
491 can be fit into 554 1 times, resulting in a remainder of 63.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 491 from 554 and we're left with 63.
Include the next digit (0) from the dividend after 63, then repeat: 630 / 491

Going ahead to step 4:
The number 491 fits into 630 1 times, leaving a remainder of 139.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtracting 491 from 630 leaves us with 139.
Fetch the next digit (5) from the dividend, attach it to 139 and continue: 1395 / 491

Let's proceed to step 5:
When dividing 1395 by 491, we get 2 with a remainder of 413.
Record the quotient 2 as the next digit in the result. 
Result so far: 112.0
Subtracting 982 from 1395 leaves us with 413.
Grab the next digit (6) from the dividend, add it to 413, then carry on: 4136 / 491

Going ahead to step 6:
491 can be fit into 4136 8 times, resulting in a remainder of 208.
The next digit of our result is 8. 
Result so far: 1128.0
Subtracting 3928 from 4136 leaves us with 208.
Append the next digit (5) from the dividend to 208 and continue with: 2085 / 491

Step 7:
The number 491 fits into 2085 4 times, leaving a remainder of 121.
The number 4 becomes the next digit in our result. 
Result so far: 11284.0
If we subtract 1964 from 2085, we get 121.
Include the next digit (7) from the dividend after 121, then repeat: 1217 / 491

Step 8:
491 goes into 1217 2 times with a remainder of 235.
The next digit of our result is 2. 
Result so far: 112842.0
The remainder is 235 after subtracting 982 from 1217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

On to step 9:
2350 divided by 491 is 4 with a remainder of 386.
The number 4 becomes the next digit in our result. 
Result so far: 112842.4
If we take 1964 away from 2350, we end up with 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

Step 10:
If we divide 3860 by 491, we get 7 and a remainder of 423.
Put 7 as the next digit of the answer. 
Result so far: 112842.47
If we take 3437 away from 3860, we end up with 423.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4230, and continue the process.

Going ahead to step 11:
491 can be fit into 4230 8 times, resulting in a remainder of 302.
Write down 8 as next digit of the result. 
Result so far: 112842.478
Deduct 3928 from 4230 and we're left with 302.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3020, and continue the process.

On to step 12:
If we divide 3020 by 491, we get 6 and a remainder of 74.
The number 6 becomes the next digit in our result. 
Result so far: 112842.4786
Subtract 2946 from 3020 to get 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Going ahead to step 13:
If we divide 740 by 491, we get 1 and a remainder of 249.
Write down 1 as next digit of the result. 
Result so far: 112842.47861
Subtract 491 from 740 to get 249.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2490, and continue the process.

Step 14:
The number 491 fits into 2490 5 times, leaving a remainder of 35.
The number 5 becomes the next digit in our result. 
Result so far: 112842.478615
If we subtract 2455 from 2490, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Step 15:
The number 491 fits into 350 0 times, leaving a remainder of 350.
Put 0 as the next digit of the answer. 
Result so far: 112842.478615
Subtracting 0 from 350 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Step 16:
491 goes into 3500 7 times with a remainder of 63.
The next digit of our result is 7. 
Result so far: 112842.47861507
Subtracting 3437 from 3500 leaves us with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

After the division, we end up with 112842.47861507 and a remainder of 6.3e-08.