25149542 ÷ 491 
The aim is to understand the frequency of 491 in 25149542.

Step 1:
491 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 491

Let's proceed to step 2:
When dividing 25 by 491, we get 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 25, we get 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 491

Going ahead to step 3:
When dividing 251 by 491, we get 0 with a remainder of 251.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 251 and we're left with 251.
Bring next digit (4) of the dividend behind the 251 and repeat the process: 2514 / 491

Going ahead to step 4:
2514 divided by 491 is 5 with a remainder of 59.
The next digit of our result is 5. 
Result so far: 5.0
If we subtract 2455 from 2514, we get 59.
Append the next digit (9) from the dividend to 59 and continue with: 599 / 491

Step 5:
491 can be fit into 599 1 times, resulting in a remainder of 108.
Record the quotient 1 as the next digit in the result. 
Result so far: 51.0
If we subtract 491 from 599, we get 108.
Bring next digit (5) of the dividend behind the 108 and repeat the process: 1085 / 491

On to step 6:
The number 491 fits into 1085 2 times, leaving a remainder of 103.
The next digit of our result is 2. 
Result so far: 512.0
Deduct 982 from 1085 and we're left with 103.
Include the next digit (4) from the dividend after 103, then repeat: 1034 / 491

Let's proceed to step 7:
If we divide 1034 by 491, we get 2 and a remainder of 52.
The next digit of our result is 2. 
Result so far: 5122.0
Deduct 982 from 1034 and we're left with 52.
Grab the next digit (2) from the dividend, add it to 52, then carry on: 522 / 491

On to step 8:
491 can be fit into 522 1 times, resulting in a remainder of 31.
The next digit of our result is 1. 
Result so far: 51221.0
If we subtract 491 from 522, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Advancing to step 9:
491 can be fit into 310 0 times, resulting in a remainder of 310.
Record the quotient 0 as the next digit in the result. 
Result so far: 51221.0
The remainder is 310 after subtracting 0 from 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Let's proceed to step 10:
When dividing 3100 by 491, we get 6 with a remainder of 154.
Record the quotient 6 as the next digit in the result. 
Result so far: 51221.06
If we subtract 2946 from 3100, we get 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Going ahead to step 11:
The number 491 fits into 1540 3 times, leaving a remainder of 67.
Put 3 as the next digit of the answer. 
Result so far: 51221.063
If we take 1473 away from 1540, we end up with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Step 12:
When dividing 670 by 491, we get 1 with a remainder of 179.
The next digit of our result is 1. 
Result so far: 51221.0631
If we subtract 491 from 670, we get 179.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1790, and continue the process.

Let's proceed to step 13:
When dividing 1790 by 491, we get 3 with a remainder of 317.
The number 3 becomes the next digit in our result. 
Result so far: 51221.06313
Subtract 1473 from 1790 to get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

Advancing to step 14:
491 can be fit into 3170 6 times, resulting in a remainder of 224.
Record the quotient 6 as the next digit in the result. 
Result so far: 51221.063136
Subtract 2946 from 3170 to get 224.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2240, and continue the process.

Going ahead to step 15:
When dividing 2240 by 491, we get 4 with a remainder of 276.
Use 4 as the next digit of our solution. 
Result so far: 51221.0631364
The remainder is 276 after subtracting 1964 from 2240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Let's proceed to step 16:
If we divide 2760 by 491, we get 5 and a remainder of 305.
Put 5 as the next digit of the answer. 
Result so far: 51221.06313645
Subtract 2455 from 2760 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

After the division, we end up with 51221.06313645 and a remainder of 3.05e-07.