We're dividing 43851221 by 625 
The aim is to understand the frequency of 625 in 43851221.

Moving on to step 1:
When dividing 4 by 625, we get 0 with a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 625

On to step 2:
The number 625 fits into 43 0 times, leaving a remainder of 43.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Fetch the next digit (8) from the dividend, attach it to 43 and continue: 438 / 625

Advancing to step 3:
The number 625 fits into 438 0 times, leaving a remainder of 438.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 438, we end up with 438.
Append the next digit (5) from the dividend to 438 and continue with: 4385 / 625

On to step 4:
If we divide 4385 by 625, we get 7 and a remainder of 10.
The next digit of our result is 7. 
Result so far: 7.0
Subtracting 4375 from 4385 leaves us with 10.
Append the next digit (1) from the dividend to 10 and continue with: 101 / 625

Moving on to step 5:
101 divided by 625 is 0 with a remainder of 101.
The next digit of our result is 0. 
Result so far: 70.0
Subtracting 0 from 101 leaves us with 101.
Append the next digit (2) from the dividend to 101 and continue with: 1012 / 625

Advancing to step 6:
If we divide 1012 by 625, we get 1 and a remainder of 387.
Write down 1 as next digit of the result. 
Result so far: 701.0
Subtracting 625 from 1012 leaves us with 387.
Include the next digit (2) from the dividend after 387, then repeat: 3872 / 625

Going ahead to step 7:
3872 divided by 625 is 6 with a remainder of 122.
The number 6 becomes the next digit in our result. 
Result so far: 7016.0
If we take 3750 away from 3872, we end up with 122.
Take the next digit (1) from the dividend and append it to 122, then repeat: 1221 / 625

Step 8:
1221 divided by 625 is 1 with a remainder of 596.
Record the quotient 1 as the next digit in the result. 
Result so far: 70161.0
If we subtract 625 from 1221, we get 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Going ahead to step 9:
If we divide 5960 by 625, we get 9 and a remainder of 335.
Write down 9 as next digit of the result. 
Result so far: 70161.9
If we subtract 5625 from 5960, we get 335.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3350, and continue the process.

Going ahead to step 10:
625 goes into 3350 5 times with a remainder of 225.
Record the quotient 5 as the next digit in the result. 
Result so far: 70161.95
Deduct 3125 from 3350 and we're left 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.

Step 11:
2250 divided by 625 is 3 with a remainder of 375.
Write down 3 as next digit of the result. 
Result so far: 70161.953
The remainder is 375 after subtracting 1875 from 2250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 12:
If we divide 3750 by 625, we get 6 and a remainder of 0.
Write down 6 as next digit of the result. 
Result so far: 70161.9536
Deduct 3750 from 3750 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 13:
When dividing 0 by 625, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 70161.9536
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 14:
625 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 70161.9536
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 70161.9536, and the remainder is 0.0.