We're dividing 17649421 by 169 
The aim is to understand the frequency of 169 in 17649421.

On to step 1:
1 divided by 169 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (7) from the dividend and append it to 1, then repeat: 17 / 169

On to step 2:
17 divided by 169 is 0 with a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 17 to get 17.
Append the next digit (6) from the dividend to 17 and continue with: 176 / 169

Let's proceed to step 3:
The number 169 fits into 176 1 times, leaving a remainder of 7.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 169 from 176 leaves us with 7.
Take the next digit (4) from the dividend and append it to 7, then repeat: 74 / 169

Going ahead to step 4:
74 divided by 169 is 0 with a remainder of 74.
Put 0 as the next digit of the answer. 
Result so far: 10.0
Deduct 0 from 74 and we're left with 74.
Bring next digit (9) of the dividend behind the 74 and repeat the process: 749 / 169

Step 5:
If we divide 749 by 169, we get 4 and a remainder of 73.
Put 4 as the next digit of the answer. 
Result so far: 104.0
The remainder is 73 after subtracting 676 from 749.
Fetch the next digit (4) from the dividend, attach it to 73 and continue: 734 / 169

Advancing to step 6:
169 goes into 734 4 times with a remainder of 58.
Put 4 as the next digit of the answer. 
Result so far: 1044.0
If we subtract 676 from 734, we get 58.
Take the next digit (2) from the dividend and append it to 58, then repeat: 582 / 169

Going ahead to step 7:
582 divided by 169 is 3 with a remainder of 75.
Write down 3 as next digit of the result. 
Result so far: 10443.0
If we take 507 away from 582, we end up with 75.
Take the next digit (1) from the dividend and append it to 75, then repeat: 751 / 169

Advancing to step 8:
169 can be fit into 751 4 times, resulting in a remainder of 75.
The next digit of our result is 4. 
Result so far: 104434.0
If we subtract 676 from 751, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 9:
The number 169 fits into 750 4 times, leaving a remainder of 74.
The number 4 becomes the next digit in our result. 
Result so far: 104434.4
If we subtract 676 from 750, we 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.

On to step 10:
169 goes into 740 4 times with a remainder of 64.
Put 4 as the next digit of the answer. 
Result so far: 104434.44
Deduct 676 from 740 and we're left with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

The final result is 104434.44 with a remainder of 0.064.