We look at the division of 3644161 by 535 
The aim is to understand the frequency of 535 in 3644161.

Step 1:
3 divided by 535 is 0 with a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Fetch the next digit (6) from the dividend, attach it to 3 and continue: 36 / 535

Going ahead to step 2:
36 divided by 535 is 0 with a remainder of 36.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 36 to get 36.
Bring next digit (4) of the dividend behind the 36 and repeat the process: 364 / 535

Moving on to step 3:
If we divide 364 by 535, we get 0 and a remainder of 364.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 364 and we're left with 364.
Take the next digit (4) from the dividend and append it to 364, then repeat: 3644 / 535

Step 4:
535 goes into 3644 6 times with a remainder of 434.
Put 6 as the next digit of the answer. 
Result so far: 6.0
Deduct 3210 from 3644 and we're left with 434.
Append the next digit (1) from the dividend to 434 and continue with: 4341 / 535

Let's proceed to step 5:
535 goes into 4341 8 times with a remainder of 61.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
Subtracting 4280 from 4341 leaves us with 61.
Grab the next digit (6) from the dividend, add it to 61, then carry on: 616 / 535

On to step 6:
535 goes into 616 1 times with a remainder of 81.
The next digit of our result is 1. 
Result so far: 681.0
Subtracting 535 from 616 leaves us with 81.
Append the next digit (1) from the dividend to 81 and continue with: 811 / 535

Advancing to step 7:
If we divide 811 by 535, we get 1 and a remainder of 276.
Write down 1 as next digit of the result. 
Result so far: 6811.0
Deduct 535 from 811 and we're left with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 8:
When dividing 2760 by 535, we get 5 with a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 6811.5
The remainder is 85 after subtracting 2675 from 2760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Going ahead to step 9:
When dividing 850 by 535, we get 1 with a remainder of 315.
Put 1 as the next digit of the answer. 
Result so far: 6811.51
Deduct 535 from 850 and we're left with 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 10:
When dividing 3150 by 535, we get 5 with a remainder of 475.
The number 5 becomes the next digit in our result. 
Result so far: 6811.515
Subtracting 2675 from 3150 leaves us with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Moving on to step 11:
When dividing 4750 by 535, we get 8 with a remainder of 470.
The number 8 becomes the next digit in our result. 
Result so far: 6811.5158
Deduct 4280 from 4750 and we're left with 470.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Step 12:
The number 535 fits into 4700 8 times, leaving a remainder of 420.
Write down 8 as next digit of the result. 
Result so far: 6811.51588
Subtracting 4280 from 4700 leaves us with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

The final result is 6811.51588 with a remainder of 0.00042.