53238045 divided by 404 
The aim is to understand the frequency of 404 in 53238045.

Moving on to step 1:
404 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Append the next digit (3) from the dividend to 5 and continue with: 53 / 404

Moving on to step 2:
53 divided by 404 is 0 with a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 53, we end up with 53.
Fetch the next digit (2) from the dividend, attach it to 53 and continue: 532 / 404

On to step 3:
404 can be fit into 532 1 times, resulting in a remainder of 128.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 128 after subtracting 404 from 532.
Take the next digit (3) from the dividend and append it to 128, then repeat: 1283 / 404

Going ahead to step 4:
1283 divided by 404 is 3 with a remainder of 71.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
If we subtract 1212 from 1283, we get 71.
Bring next digit (8) of the dividend behind the 71 and repeat the process: 718 / 404

Advancing to step 5:
The number 404 fits into 718 1 times, leaving a remainder of 314.
Use 1 as the next digit of our solution. 
Result so far: 131.0
If we take 404 away from 718, we end up with 314.
Append the next digit (0) from the dividend to 314 and continue with: 3140 / 404

Let's proceed to step 6:
404 goes into 3140 7 times with a remainder of 312.
Use 7 as the next digit of our solution. 
Result so far: 1317.0
If we subtract 2828 from 3140, we get 312.
Fetch the next digit (4) from the dividend, attach it to 312 and continue: 3124 / 404

Step 7:
The number 404 fits into 3124 7 times, leaving a remainder of 296.
The number 7 becomes the next digit in our result. 
Result so far: 13177.0
Deduct 2828 from 3124 and we're left with 296.
Take the next digit (5) from the dividend and append it to 296, then repeat: 2965 / 404

Advancing to step 8:
404 can be fit into 2965 7 times, resulting in a remainder of 137.
The number 7 becomes the next digit in our result. 
Result so far: 131777.0
Deduct 2828 from 2965 and we're left with 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 9:
1370 divided by 404 is 3 with a remainder of 158.
Put 3 as the next digit of the answer. 
Result so far: 131777.3
If we subtract 1212 from 1370, we get 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

Going ahead to step 10:
404 goes into 1580 3 times with a remainder of 368.
Write down 3 as next digit of the result. 
Result so far: 131777.33
The remainder is 368 after subtracting 1212 from 1580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3680, and continue the process.

Our division results in 131777.33 with a remaining 0.368.