We look at the division of 11221257 by 717 
The aim is to understand the frequency of 717 in 11221257.

Going ahead to step 1:
The number 717 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (1) from the dividend after 1, then repeat: 11 / 717

On to step 2:
When dividing 11 by 717, we get 0 with a remainder of 11.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 11 to get 11.
Grab the next digit (2) from the dividend, add it to 11, then carry on: 112 / 717

On to step 3:
717 goes into 112 0 times with a remainder of 112.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 112 to get 112.
Append the next digit (2) from the dividend to 112 and continue with: 1122 / 717

Advancing to step 4:
717 goes into 1122 1 times with a remainder of 405.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtract 717 from 1122 to get 405.
Take the next digit (1) from the dividend and append it to 405, then repeat: 4051 / 717

Step 5:
717 goes into 4051 5 times with a remainder of 466.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
Subtract 3585 from 4051 to get 466.
Bring next digit (2) of the dividend behind the 466 and repeat the process: 4662 / 717

Advancing to step 6:
When dividing 4662 by 717, we get 6 with a remainder of 360.
Use 6 as the next digit of our solution. 
Result so far: 156.0
Deduct 4302 from 4662 and we're left with 360.
Take the next digit (5) from the dividend and append it to 360, then repeat: 3605 / 717

Let's proceed to step 7:
3605 divided by 717 is 5 with a remainder of 20.
Record the quotient 5 as the next digit in the result. 
Result so far: 1565.0
If we take 3585 away from 3605, we end up with 20.
Grab the next digit (7) from the dividend, add it to 20, then carry on: 207 / 717

Step 8:
717 can be fit into 207 0 times, resulting in a remainder of 207.
Use 0 as the next digit of our solution. 
Result so far: 15650.0
The remainder is 207 after subtracting 0 from 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Moving on to step 9:
2070 divided by 717 is 2 with a remainder of 636.
Write down 2 as next digit of the result. 
Result so far: 15650.2
The remainder is 636 after subtracting 1434 from 2070.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6360, and continue the process.

Moving on to step 10:
717 goes into 6360 8 times with a remainder of 624.
The number 8 becomes the next digit in our result. 
Result so far: 15650.28
Subtract 5736 from 6360 to get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

Moving on to step 11:
If we divide 6240 by 717, we get 8 and a remainder of 504.
The number 8 becomes the next digit in our result. 
Result so far: 15650.288
Deduct 5736 from 6240 and we're left with 504.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5040, and continue the process.

After the division, we end up with 15650.288 and a remainder of 0.0504.