We're dividing 63851186 by 725 
The aim is to understand the frequency of 725 in 63851186.

Let's proceed to step 1:
If we divide 6 by 725, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (3) from the dividend and append it to 6, then repeat: 63 / 725

Advancing to step 2:
725 can be fit into 63 0 times, resulting in a remainder of 63.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 63, we end up with 63.
Take the next digit (8) from the dividend and append it to 63, then repeat: 638 / 725

On to step 3:
When dividing 638 by 725, we get 0 with a remainder of 638.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 638, we end up with 638.
Grab the next digit (5) from the dividend, add it to 638, then carry on: 6385 / 725

Going ahead to step 4:
725 goes into 6385 8 times with a remainder of 585.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Deduct 5800 from 6385 and we're left with 585.
Take the next digit (1) from the dividend and append it to 585, then repeat: 5851 / 725

Moving on to step 5:
The number 725 fits into 5851 8 times, leaving a remainder of 51.
Write down 8 as next digit of the result. 
Result so far: 88.0
Subtract 5800 from 5851 to get 51.
Take the next digit (1) from the dividend and append it to 51, then repeat: 511 / 725

On to step 6:
When dividing 511 by 725, we get 0 with a remainder of 511.
The number 0 becomes the next digit in our result. 
Result so far: 880.0
Subtracting 0 from 511 leaves us with 511.
Bring next digit (8) of the dividend behind the 511 and repeat the process: 5118 / 725

Moving on to step 7:
If we divide 5118 by 725, we get 7 and a remainder of 43.
The number 7 becomes the next digit in our result. 
Result so far: 8807.0
Deduct 5075 from 5118 and we're left with 43.
Append the next digit (6) from the dividend to 43 and continue with: 436 / 725

Moving on to step 8:
If we divide 436 by 725, we get 0 and a remainder of 436.
The number 0 becomes the next digit in our result. 
Result so far: 88070.0
Deduct 0 from 436 and we're left with 436.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4360, and continue the process.

Step 9:
725 goes into 4360 6 times with a remainder of 10.
The number 6 becomes the next digit in our result. 
Result so far: 88070.6
If we take 4350 away from 4360, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
725 goes into 100 0 times with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 88070.6
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 11:
725 goes into 1000 1 times with a remainder of 275.
Record the quotient 1 as the next digit in the result. 
Result so far: 88070.601
If we subtract 725 from 1000, we get 275.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Moving on to step 12:
The number 725 fits into 2750 3 times, leaving a remainder of 575.
Record the quotient 3 as the next digit in the result. 
Result so far: 88070.6013
Subtracting 2175 from 2750 leaves us with 575.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5750, and continue the process.

On to step 13:
725 goes into 5750 7 times with a remainder of 675.
Put 7 as the next digit of the answer. 
Result so far: 88070.60137
Subtracting 5075 from 5750 leaves us with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

Step 14:
6750 divided by 725 is 9 with a remainder of 225.
The next digit of our result is 9. 
Result so far: 88070.601379
If we take 6525 away from 6750, we end up with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 15:
If we divide 2250 by 725, we get 3 and a remainder of 75.
The next digit of our result is 3. 
Result so far: 88070.6013793
Subtracting 2175 from 2250 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

On to step 16:
When dividing 750 by 725, we get 1 with a remainder of 25.
Put 1 as the next digit of the answer. 
Result so far: 88070.60137931
Deduct 725 from 750 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 88070.60137931 and a remainder of 2.5e-08.