Let's divide 70893225 by 815
The aim is to understand the frequency of 815 in 70893225.

Let's proceed to step 1:
815 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (0) from the dividend, add it to 7, then carry on: 70 / 815

Let's proceed to step 2:
When dividing 70 by 815, we get 0 with a remainder of 70.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 70 after subtracting 0 from 70.
Grab the next digit (8) from the dividend, add it to 70, then carry on: 708 / 815

Going ahead to step 3:
If we divide 708 by 815, we get 0 and a remainder of 708.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 708, we end up with 708.
Bring next digit (9) of the dividend behind the 708 and repeat the process: 7089 / 815

On to step 4:
The number 815 fits into 7089 8 times, leaving a remainder of 569.
Record the quotient 8 as the next digit in the result. 
Result so far: 8.0
Subtract 6520 from 7089 to get 569.
Fetch the next digit (3) from the dividend, attach it to 569 and continue: 5693 / 815

On to step 5:
The number 815 fits into 5693 6 times, leaving a remainder of 803.
The next digit of our result is 6. 
Result so far: 86.0
The remainder is 803 after subtracting 4890 from 5693.
Grab the next digit (2) from the dividend, add it to 803, then carry on: 8032 / 815

Step 6:
815 can be fit into 8032 9 times, resulting in a remainder of 697.
Record the quotient 9 as the next digit in the result. 
Result so far: 869.0
If we take 7335 away from 8032, we end up with 697.
Append the next digit (2) from the dividend to 697 and continue with: 6972 / 815

Moving on to step 7:
The number 815 fits into 6972 8 times, leaving a remainder of 452.
The next digit of our result is 8. 
Result so far: 8698.0
Deduct 6520 from 6972 and we're left with 452.
Take the next digit (5) from the dividend and append it to 452, then repeat: 4525 / 815

On to step 8:
4525 divided by 815 is 5 with a remainder of 450.
Use 5 as the next digit of our solution. 
Result so far: 86985.0
If we subtract 4075 from 4525, we get 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

On to step 9:
815 can be fit into 4500 5 times, resulting in a remainder of 425.
Write down 5 as next digit of the result. 
Result so far: 86985.5
The remainder is 425 after subtracting 4075 from 4500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4250, and continue the process.

Advancing to step 10:
815 goes into 4250 5 times with a remainder of 175.
Use 5 as the next digit of our solution. 
Result so far: 86985.55
Subtracting 4075 from 4250 leaves us with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

The quotient of the division is 86985.55, and the remainder is 0.175.