2637887 divided by 836 
The aim is to understand the frequency of 836 in 2637887.

On to step 1:
If we divide 2 by 836, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 836

Let's proceed to step 2:
836 can be fit into 26 0 times, resulting in a remainder of 26.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 26, we end up with 26.
Fetch the next digit (3) from the dividend, attach it to 26 and continue: 263 / 836

Advancing to step 3:
When dividing 263 by 836, we get 0 with a remainder of 263.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 263 after subtracting 0 from 263.
Append the next digit (7) from the dividend to 263 and continue with: 2637 / 836

Step 4:
When dividing 2637 by 836, we get 3 with a remainder of 129.
Put 3 as the next digit of the answer. 
Result so far: 3.0
If we take 2508 away from 2637, we end up with 129.
Grab the next digit (8) from the dividend, add it to 129, then carry on: 1298 / 836

Advancing to step 5:
If we divide 1298 by 836, we get 1 and a remainder of 462.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
Subtract 836 from 1298 to get 462.
Include the next digit (8) from the dividend after 462, then repeat: 4628 / 836

Moving on to step 6:
836 goes into 4628 5 times with a remainder of 448.
Put 5 as the next digit of the answer. 
Result so far: 315.0
If we subtract 4180 from 4628, we get 448.
Append the next digit (7) from the dividend to 448 and continue with: 4487 / 836

Advancing to step 7:
4487 divided by 836 is 5 with a remainder of 307.
Use 5 as the next digit of our solution. 
Result so far: 3155.0
Subtracting 4180 from 4487 leaves us with 307.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3070, and continue the process.

Advancing to step 8:
836 goes into 3070 3 times with a remainder of 562.
Record the quotient 3 as the next digit in the result. 
Result so far: 3155.3
If we take 2508 away from 3070, we end up with 562.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5620, and continue the process.

Moving on to step 9:
836 goes into 5620 6 times with a remainder of 604.
Use 6 as the next digit of our solution. 
Result so far: 3155.36
If we subtract 5016 from 5620, we get 604.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6040, and continue the process.

Going ahead to step 10:
836 can be fit into 6040 7 times, resulting in a remainder of 188.
Use 7 as the next digit of our solution. 
Result so far: 3155.367
If we subtract 5852 from 6040, we get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Going ahead to step 11:
The number 836 fits into 1880 2 times, leaving a remainder of 208.
Use 2 as the next digit of our solution. 
Result so far: 3155.3672
Subtracting 1672 from 1880 leaves us with 208.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2080, and continue the process.

Moving on to step 12:
The number 836 fits into 2080 2 times, leaving a remainder of 408.
The number 2 becomes the next digit in our result. 
Result so far: 3155.36722
Subtracting 1672 from 2080 leaves us with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

The final result is 3155.36722 with a remainder of 0.000408.