Let's divide 64243690 by 835
The aim is to understand the frequency of 835 in 64243690.

Advancing to step 1:
835 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 835

Moving on to step 2:
If we divide 64 by 835, we get 0 and a remainder of 64.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Fetch the next digit (2) from the dividend, attach it to 64 and continue: 642 / 835

On to step 3:
If we divide 642 by 835, we get 0 and a remainder of 642.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 642 after subtracting 0 from 642.
Take the next digit (4) from the dividend and append it to 642, then repeat: 6424 / 835

Let's proceed to step 4:
When dividing 6424 by 835, we get 7 with a remainder of 579.
Write down 7 as next digit of the result. 
Result so far: 7.0
Subtract 5845 from 6424 to get 579.
Grab the next digit (3) from the dividend, add it to 579, then carry on: 5793 / 835

Advancing to step 5:
If we divide 5793 by 835, we get 6 and a remainder of 783.
Record the quotient 6 as the next digit in the result. 
Result so far: 76.0
Subtracting 5010 from 5793 leaves us with 783.
Append the next digit (6) from the dividend to 783 and continue with: 7836 / 835

Let's proceed to step 6:
The number 835 fits into 7836 9 times, leaving a remainder of 321.
Write down 9 as next digit of the result. 
Result so far: 769.0
Deduct 7515 from 7836 and we're left with 321.
Include the next digit (9) from the dividend after 321, then repeat: 3219 / 835

On to step 7:
3219 divided by 835 is 3 with a remainder of 714.
The next digit of our result is 3. 
Result so far: 7693.0
If we take 2505 away from 3219, we end up with 714.
Include the next digit (0) from the dividend after 714, then repeat: 7140 / 835

On to step 8:
7140 divided by 835 is 8 with a remainder of 460.
The number 8 becomes the next digit in our result. 
Result so far: 76938.0
If we take 6680 away from 7140, we end up with 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

Step 9:
4600 divided by 835 is 5 with a remainder of 425.
Use 5 as the next digit of our solution. 
Result so far: 76938.5
If we take 4175 away from 4600, we end up with 425.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Advancing to step 10:
4250 divided by 835 is 5 with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 76938.55
The remainder is 75 after subtracting 4175 from 4250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

The final result is 76938.55 with a remainder of 0.075.