We're dividing 61533544 by 638 
The aim is to understand the frequency of 638 in 61533544.

On to step 1:
638 goes into 6 0 times with a remainder of 6.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 638

Moving on to step 2:
61 divided by 638 is 0 with a remainder of 61.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 61 after subtracting 0 from 61.
Fetch the next digit (5) from the dividend, attach it to 61 and continue: 615 / 638

Let's proceed to step 3:
When dividing 615 by 638, we get 0 with a remainder of 615.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 615, we get 615.
Take the next digit (3) from the dividend and append it to 615, then repeat: 6153 / 638

Going ahead to step 4:
The number 638 fits into 6153 9 times, leaving a remainder of 411.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 5742 from 6153 and we're left with 411.
Grab the next digit (3) from the dividend, add it to 411, then carry on: 4113 / 638

Going ahead to step 5:
The number 638 fits into 4113 6 times, leaving a remainder of 285.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
Subtract 3828 from 4113 to get 285.
Append the next digit (5) from the dividend to 285 and continue with: 2855 / 638

Going ahead to step 6:
The number 638 fits into 2855 4 times, leaving a remainder of 303.
Record the quotient 4 as the next digit in the result. 
Result so far: 964.0
Subtracting 2552 from 2855 leaves us with 303.
Bring next digit (4) of the dividend behind the 303 and repeat the process: 3034 / 638

Moving on to step 7:
3034 divided by 638 is 4 with a remainder of 482.
Record the quotient 4 as the next digit in the result. 
Result so far: 9644.0
If we subtract 2552 from 3034, we get 482.
Fetch the next digit (4) from the dividend, attach it to 482 and continue: 4824 / 638

Let's proceed to step 8:
The number 638 fits into 4824 7 times, leaving a remainder of 358.
Put 7 as the next digit of the answer. 
Result so far: 96447.0
If we take 4466 away from 4824, we end up with 358.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3580, and continue the process.

Advancing to step 9:
3580 divided by 638 is 5 with a remainder of 390.
The next digit of our result is 5. 
Result so far: 96447.5
Deduct 3190 from 3580 and we're left with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 10:
638 can be fit into 3900 6 times, resulting in a remainder of 72.
The number 6 becomes the next digit in our result. 
Result so far: 96447.56
If we take 3828 away from 3900, we end up with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

On to step 11:
638 can be fit into 720 1 times, resulting in a remainder of 82.
The number 1 becomes the next digit in our result. 
Result so far: 96447.561
The remainder is 82 after subtracting 638 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Step 12:
638 goes into 820 1 times with a remainder of 182.
Use 1 as the next digit of our solution. 
Result so far: 96447.5611
Subtract 638 from 820 to get 182.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1820, and continue the process.

The final outcome is 96447.5611, with a leftover of 0.00182.