We're dividing 81321579 by 245 
The aim is to understand the frequency of 245 in 81321579.

Going ahead to step 1:
245 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 245

Step 2:
The number 245 fits into 81 0 times, leaving a remainder of 81.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Bring next digit (3) of the dividend behind the 81 and repeat the process: 813 / 245

Step 3:
The number 245 fits into 813 3 times, leaving a remainder of 78.
The next digit of our result is 3. 
Result so far: 3.0
The remainder is 78 after subtracting 735 from 813.
Append the next digit (2) from the dividend to 78 and continue with: 782 / 245

On to step 4:
If we divide 782 by 245, we get 3 and a remainder of 47.
Use 3 as the next digit of our solution. 
Result so far: 33.0
The remainder is 47 after subtracting 735 from 782.
Grab the next digit (1) from the dividend, add it to 47, then carry on: 471 / 245

Going ahead to step 5:
The number 245 fits into 471 1 times, leaving a remainder of 226.
The next digit of our result is 1. 
Result so far: 331.0
If we take 245 away from 471, we end up with 226.
Take the next digit (5) from the dividend and append it to 226, then repeat: 2265 / 245

Moving on to step 6:
If we divide 2265 by 245, we get 9 and a remainder of 60.
Write down 9 as next digit of the result. 
Result so far: 3319.0
The remainder is 60 after subtracting 2205 from 2265.
Bring next digit (7) of the dividend behind the 60 and repeat the process: 607 / 245

Let's proceed to step 7:
The number 245 fits into 607 2 times, leaving a remainder of 117.
Record the quotient 2 as the next digit in the result. 
Result so far: 33192.0
If we subtract 490 from 607, we get 117.
Take the next digit (9) from the dividend and append it to 117, then repeat: 1179 / 245

Step 8:
When dividing 1179 by 245, we get 4 with a remainder of 199.
The next digit of our result is 4. 
Result so far: 331924.0
Subtract 980 from 1179 to get 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

On to step 9:
245 goes into 1990 8 times with a remainder of 30.
Record the quotient 8 as the next digit in the result. 
Result so far: 331924.8
If we subtract 1960 from 1990, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 10:
The number 245 fits into 300 1 times, leaving a remainder of 55.
Use 1 as the next digit of our solution. 
Result so far: 331924.81
Subtracting 245 from 300 leaves us with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Step 11:
245 can be fit into 550 2 times, resulting in a remainder of 60.
The number 2 becomes the next digit in our result. 
Result so far: 331924.812
If we take 490 away from 550, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

On to step 12:
When dividing 600 by 245, we get 2 with a remainder of 110.
The next digit of our result is 2. 
Result so far: 331924.8122
If we take 490 away from 600, we end up with 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Our division results in 331924.8122 with a remaining 0.0011.