We're dividing 7225625 by 615 
The aim is to understand the frequency of 615 in 7225625.

Step 1:
The number 615 fits into 7 0 times, leaving a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 615

On to step 2:
If we divide 72 by 615, we get 0 and a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Append the next digit (2) from the dividend to 72 and continue with: 722 / 615

Moving on to step 3:
The number 615 fits into 722 1 times, leaving a remainder of 107.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 615 from 722 leaves us with 107.
Take the next digit (5) from the dividend and append it to 107, then repeat: 1075 / 615

Going ahead to step 4:
615 can be fit into 1075 1 times, resulting in a remainder of 460.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we subtract 615 from 1075, we get 460.
Append the next digit (6) from the dividend to 460 and continue with: 4606 / 615

Going ahead to step 5:
When dividing 4606 by 615, we get 7 with a remainder of 301.
Put 7 as the next digit of the answer. 
Result so far: 117.0
Subtracting 4305 from 4606 leaves us with 301.
Grab the next digit (2) from the dividend, add it to 301, then carry on: 3012 / 615

Let's proceed to step 6:
When dividing 3012 by 615, we get 4 with a remainder of 552.
Put 4 as the next digit of the answer. 
Result so far: 1174.0
Subtract 2460 from 3012 to get 552.
Take the next digit (5) from the dividend and append it to 552, then repeat: 5525 / 615

Advancing to step 7:
615 can be fit into 5525 8 times, resulting in a remainder of 605.
Put 8 as the next digit of the answer. 
Result so far: 11748.0
Subtract 4920 from 5525 to get 605.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Let's proceed to step 8:
615 can be fit into 6050 9 times, resulting in a remainder of 515.
The next digit of our result is 9. 
Result so far: 11748.9
Subtracting 5535 from 6050 leaves us with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

Let's proceed to step 9:
615 can be fit into 5150 8 times, resulting in a remainder of 230.
Write down 8 as next digit of the result. 
Result so far: 11748.98
If we take 4920 away from 5150, we end up with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 10:
If we divide 2300 by 615, we get 3 and a remainder of 455.
The next digit of our result is 3. 
Result so far: 11748.983
Deduct 1845 from 2300 and we're left with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

Step 11:
4550 divided by 615 is 7 with a remainder of 245.
The number 7 becomes the next digit in our result. 
Result so far: 11748.9837
Subtract 4305 from 4550 to get 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

Advancing to step 12:
If we divide 2450 by 615, we get 3 and a remainder of 605.
Record the quotient 3 as the next digit in the result. 
Result so far: 11748.98373
The remainder is 605 after subtracting 1845 from 2450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6050, and continue the process.

Advancing to step 13:
If we divide 6050 by 615, we get 9 and a remainder of 515.
Put 9 as the next digit of the answer. 
Result so far: 11748.983739
Subtracting 5535 from 6050 leaves us with 515.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5150, and continue the process.

On to step 14:
615 can be fit into 5150 8 times, resulting in a remainder of 230.
The next digit of our result is 8. 
Result so far: 11748.9837398
Deduct 4920 from 5150 and we're left with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Going ahead to step 15:
615 goes into 2300 3 times with a remainder of 455.
The next digit of our result is 3. 
Result so far: 11748.98373983
Subtracting 1845 from 2300 leaves us with 455.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4550, and continue the process.

After the division, we end up with 11748.98373983 and a remainder of 4.55e-07.