Let's divide 58239145 by 638
The aim is to understand the frequency of 638 in 58239145.

Going ahead to step 1:
5 divided by 638 is 0 with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Bring next digit (8) of the dividend behind the 5 and repeat the process: 58 / 638

On to step 2:
If we divide 58 by 638, we get 0 and a remainder of 58.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Bring next digit (2) of the dividend behind the 58 and repeat the process: 582 / 638

Moving on to step 3:
The number 638 fits into 582 0 times, leaving a remainder of 582.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 582 after subtracting 0 from 582.
Take the next digit (3) from the dividend and append it to 582, then repeat: 5823 / 638

Step 4:
The number 638 fits into 5823 9 times, leaving a remainder of 81.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
If we take 5742 away from 5823, we end up with 81.
Append the next digit (9) from the dividend to 81 and continue with: 819 / 638

Moving on to step 5:
638 can be fit into 819 1 times, resulting in a remainder of 181.
Put 1 as the next digit of the answer. 
Result so far: 91.0
Subtract 638 from 819 to get 181.
Include the next digit (1) from the dividend after 181, then repeat: 1811 / 638

Moving on to step 6:
1811 divided by 638 is 2 with a remainder of 535.
The number 2 becomes the next digit in our result. 
Result so far: 912.0
Subtract 1276 from 1811 to get 535.
Bring next digit (4) of the dividend behind the 535 and repeat the process: 5354 / 638

Moving on to step 7:
5354 divided by 638 is 8 with a remainder of 250.
Record the quotient 8 as the next digit in the result. 
Result so far: 9128.0
The remainder is 250 after subtracting 5104 from 5354.
Take the next digit (5) from the dividend and append it to 250, then repeat: 2505 / 638

Step 8:
When dividing 2505 by 638, we get 3 with a remainder of 591.
Record the quotient 3 as the next digit in the result. 
Result so far: 91283.0
The remainder is 591 after subtracting 1914 from 2505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5910, and continue the process.

Going ahead to step 9:
638 can be fit into 5910 9 times, resulting in a remainder of 168.
Write down 9 as next digit of the result. 
Result so far: 91283.9
If we take 5742 away from 5910, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Step 10:
If we divide 1680 by 638, we get 2 and a remainder of 404.
The number 2 becomes the next digit in our result. 
Result so far: 91283.92
The remainder is 404 after subtracting 1276 from 1680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4040, and continue the process.

On to step 11:
When dividing 4040 by 638, we get 6 with a remainder of 212.
Put 6 as the next digit of the answer. 
Result so far: 91283.926
If we take 3828 away from 4040, we end up with 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

Moving on to step 12:
638 goes into 2120 3 times with a remainder of 206.
The number 3 becomes the next digit in our result. 
Result so far: 91283.9263
Subtract 1914 from 2120 to get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

On to step 13:
2060 divided by 638 is 3 with a remainder of 146.
Put 3 as the next digit of the answer. 
Result so far: 91283.92633
Subtracting 1914 from 2060 leaves us with 146.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1460, and continue the process.

The final result is 91283.92633 with a remainder of 0.000146.