30395643 ÷ 225 
The aim is to understand the frequency of 225 in 30395643.

Going ahead to step 1:
The number 225 fits into 3 0 times, leaving a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 3 and we're left with 3.
Fetch the next digit (0) from the dividend, attach it to 3 and continue: 30 / 225

Going ahead to step 2:
30 divided by 225 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Include the next digit (3) from the dividend after 30, then repeat: 303 / 225

On to step 3:
225 can be fit into 303 1 times, resulting in a remainder of 78.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 225 from 303 and we're left with 78.
Bring next digit (9) of the dividend behind the 78 and repeat the process: 789 / 225

On to step 4:
The number 225 fits into 789 3 times, leaving a remainder of 114.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 675 away from 789, we end up with 114.
Include the next digit (5) from the dividend after 114, then repeat: 1145 / 225

Moving on to step 5:
1145 divided by 225 is 5 with a remainder of 20.
Use 5 as the next digit of our solution. 
Result so far: 135.0
If we take 1125 away from 1145, we end up with 20.
Append the next digit (6) from the dividend to 20 and continue with: 206 / 225

Going ahead to step 6:
If we divide 206 by 225, we get 0 and a remainder of 206.
Record the quotient 0 as the next digit in the result. 
Result so far: 1350.0
Deduct 0 from 206 and we're left with 206.
Grab the next digit (4) from the dividend, add it to 206, then carry on: 2064 / 225

On to step 7:
225 can be fit into 2064 9 times, resulting in a remainder of 39.
Put 9 as the next digit of the answer. 
Result so far: 13509.0
If we take 2025 away from 2064, we end up with 39.
Include the next digit (3) from the dividend after 39, then repeat: 393 / 225

Advancing to step 8:
The number 225 fits into 393 1 times, leaving a remainder of 168.
Write down 1 as next digit of the result. 
Result so far: 135091.0
The remainder is 168 after subtracting 225 from 393.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Let's proceed to step 9:
The number 225 fits into 1680 7 times, leaving a remainder of 105.
Use 7 as the next digit of our solution. 
Result so far: 135091.7
Deduct 1575 from 1680 and we're left with 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Advancing to step 10:
When dividing 1050 by 225, we get 4 with a remainder of 150.
The next digit of our result is 4. 
Result so far: 135091.74
Deduct 900 from 1050 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Going ahead to step 11:
225 can be fit into 1500 6 times, resulting in a remainder of 150.
Put 6 as the next digit of the answer. 
Result so far: 135091.746
Deduct 1350 from 1500 and we're left with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Let's proceed to step 12:
225 goes into 1500 6 times with a remainder of 150.
Write down 6 as next digit of the result. 
Result so far: 135091.7466
Subtract 1350 from 1500 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

In conclusion, the division gives 135091.7466 with a balance of 0.0015.