We're dividing 86403918 by 835 
The aim is to understand the frequency of 835 in 86403918.

Advancing to step 1:
The number 835 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 835

Let's proceed to step 2:
86 divided by 835 is 0 with a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 86 to get 86.
Include the next digit (4) from the dividend after 86, then repeat: 864 / 835

On to step 3:
The number 835 fits into 864 1 times, leaving a remainder of 29.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 835 away from 864, we end up with 29.
Grab the next digit (0) from the dividend, add it to 29, then carry on: 290 / 835

On to step 4:
835 goes into 290 0 times with a remainder of 290.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 290 to get 290.
Take the next digit (3) from the dividend and append it to 290, then repeat: 2903 / 835

Advancing to step 5:
The number 835 fits into 2903 3 times, leaving a remainder of 398.
The next digit of our result is 3. 
Result so far: 103.0
Subtract 2505 from 2903 to get 398.
Grab the next digit (9) from the dividend, add it to 398, then carry on: 3989 / 835

Advancing to step 6:
835 goes into 3989 4 times with a remainder of 649.
Use 4 as the next digit of our solution. 
Result so far: 1034.0
Subtracting 3340 from 3989 leaves us with 649.
Include the next digit (1) from the dividend after 649, then repeat: 6491 / 835

Moving on to step 7:
The number 835 fits into 6491 7 times, leaving a remainder of 646.
Record the quotient 7 as the next digit in the result. 
Result so far: 10347.0
Deduct 5845 from 6491 and we're left with 646.
Append the next digit (8) from the dividend to 646 and continue with: 6468 / 835

Let's proceed to step 8:
6468 divided by 835 is 7 with a remainder of 623.
Record the quotient 7 as the next digit in the result. 
Result so far: 103477.0
The remainder is 623 after subtracting 5845 from 6468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6230, and continue the process.

Going ahead to step 9:
835 can be fit into 6230 7 times, resulting in a remainder of 385.
The next digit of our result is 7. 
Result so far: 103477.7
If we take 5845 away from 6230, we end up with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

Going ahead to step 10:
3850 divided by 835 is 4 with a remainder of 510.
Put 4 as the next digit of the answer. 
Result so far: 103477.74
Subtract 3340 from 3850 to get 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Step 11:
5100 divided by 835 is 6 with a remainder of 90.
The next digit of our result is 6. 
Result so far: 103477.746
Subtract 5010 from 5100 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 12:
835 goes into 900 1 times with a remainder of 65.
Use 1 as the next digit of our solution. 
Result so far: 103477.7461
Subtracting 835 from 900 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Moving on to step 13:
If we divide 650 by 835, we get 0 and a remainder of 650.
The number 0 becomes the next digit in our result. 
Result so far: 103477.7461
Subtract 0 from 650 to get 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Let's proceed to step 14:
The number 835 fits into 6500 7 times, leaving a remainder of 655.
Write down 7 as next digit of the result. 
Result so far: 103477.746107
The remainder is 655 after subtracting 5845 from 6500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6550, and continue the process.

On to step 15:
The number 835 fits into 6550 7 times, leaving a remainder of 705.
Record the quotient 7 as the next digit in the result. 
Result so far: 103477.7461077
Deduct 5845 from 6550 and we're left with 705.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7050, and continue the process.

Our division results in 103477.7461077 with a remaining 7.05e-06.