84251598 divided by 404 
The aim is to understand the frequency of 404 in 84251598.

On to step 1:
When dividing 8 by 404, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (4) from the dividend, attach it to 8 and continue: 84 / 404

Moving on to step 2:
404 goes into 84 0 times with a remainder of 84.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 84, we end up with 84.
Include the next digit (2) from the dividend after 84, then repeat: 842 / 404

Let's proceed to step 3:
842 divided by 404 is 2 with a remainder of 34.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we take 808 away from 842, we end up with 34.
Grab the next digit (5) from the dividend, add it to 34, then carry on: 345 / 404

On to step 4:
When dividing 345 by 404, we get 0 with a remainder of 345.
The number 0 becomes the next digit in our result. 
Result so far: 20.0
Deduct 0 from 345 and we're left with 345.
Fetch the next digit (1) from the dividend, attach it to 345 and continue: 3451 / 404

Let's proceed to step 5:
404 goes into 3451 8 times with a remainder of 219.
Write down 8 as next digit of the result. 
Result so far: 208.0
If we take 3232 away from 3451, we end up with 219.
Fetch the next digit (5) from the dividend, attach it to 219 and continue: 2195 / 404

Moving on to step 6:
2195 divided by 404 is 5 with a remainder of 175.
Put 5 as the next digit of the answer. 
Result so far: 2085.0
If we take 2020 away from 2195, we end up with 175.
Include the next digit (9) from the dividend after 175, then repeat: 1759 / 404

Advancing to step 7:
404 can be fit into 1759 4 times, resulting in a remainder of 143.
The number 4 becomes the next digit in our result. 
Result so far: 20854.0
The remainder is 143 after subtracting 1616 from 1759.
Take the next digit (8) from the dividend and append it to 143, then repeat: 1438 / 404

On to step 8:
404 goes into 1438 3 times with a remainder of 226.
Put 3 as the next digit of the answer. 
Result so far: 208543.0
If we subtract 1212 from 1438, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Step 9:
When dividing 2260 by 404, we get 5 with a remainder of 240.
The next digit of our result is 5. 
Result so far: 208543.5
Deduct 2020 from 2260 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 10:
2400 divided by 404 is 5 with a remainder of 380.
The number 5 becomes the next digit in our result. 
Result so far: 208543.55
If we take 2020 away from 2400, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The quotient of the division is 208543.55, and the remainder is 0.38.