52986475 ÷ 396 
The aim is to understand the frequency of 396 in 52986475.

Step 1:
5 divided by 396 is 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Grab the next digit (2) from the dividend, add it to 5, then carry on: 52 / 396

Going ahead to step 2:
The number 396 fits into 52 0 times, leaving a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 52 and we're left with 52.
Include the next digit (9) from the dividend after 52, then repeat: 529 / 396

On to step 3:
When dividing 529 by 396, we get 1 with a remainder of 133.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 396 from 529, we get 133.
Fetch the next digit (8) from the dividend, attach it to 133 and continue: 1338 / 396

Moving on to step 4:
396 can be fit into 1338 3 times, resulting in a remainder of 150.
The number 3 becomes the next digit in our result. 
Result so far: 13.0
The remainder is 150 after subtracting 1188 from 1338.
Fetch the next digit (6) from the dividend, attach it to 150 and continue: 1506 / 396

Going ahead to step 5:
If we divide 1506 by 396, we get 3 and a remainder of 318.
Record the quotient 3 as the next digit in the result. 
Result so far: 133.0
Subtracting 1188 from 1506 leaves us with 318.
Include the next digit (4) from the dividend after 318, then repeat: 3184 / 396

Step 6:
3184 divided by 396 is 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 1338.0
Deduct 3168 from 3184 and we're left with 16.
Fetch the next digit (7) from the dividend, attach it to 16 and continue: 167 / 396

On to step 7:
The number 396 fits into 167 0 times, leaving a remainder of 167.
Record the quotient 0 as the next digit in the result. 
Result so far: 13380.0
If we take 0 away from 167, we end up with 167.
Append the next digit (5) from the dividend to 167 and continue with: 1675 / 396

Moving on to step 8:
1675 divided by 396 is 4 with a remainder of 91.
Write down 4 as next digit of the result. 
Result so far: 133804.0
Subtracting 1584 from 1675 leaves us with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Step 9:
If we divide 910 by 396, we get 2 and a remainder of 118.
Record the quotient 2 as the next digit in the result. 
Result so far: 133804.2
If we take 792 away from 910, we end up with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

On to step 10:
396 goes into 1180 2 times with a remainder of 388.
Put 2 as the next digit of the answer. 
Result so far: 133804.22
Subtracting 792 from 1180 leaves us with 388.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3880, and continue the process.

The final outcome is 133804.22, with a leftover of 0.388.