Let's divide 85509991 by 245
The aim is to understand the frequency of 245 in 85509991.

On to step 1:
When dividing 8 by 245, we get 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (5) from the dividend, add it to 8, then carry on: 85 / 245

Going ahead to step 2:
245 can be fit into 85 0 times, resulting in a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 85, we end up with 85.
Grab the next digit (5) from the dividend, add it to 85, then carry on: 855 / 245

On to step 3:
855 divided by 245 is 3 with a remainder of 120.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 735 from 855 to get 120.
Fetch the next digit (0) from the dividend, attach it to 120 and continue: 1200 / 245

Advancing to step 4:
245 can be fit into 1200 4 times, resulting in a remainder of 220.
Use 4 as the next digit of our solution. 
Result so far: 34.0
The remainder is 220 after subtracting 980 from 1200.
Grab the next digit (9) from the dividend, add it to 220, then carry on: 2209 / 245

Step 5:
2209 divided by 245 is 9 with a remainder of 4.
The next digit of our result is 9. 
Result so far: 349.0
If we take 2205 away from 2209, we end up with 4.
Append the next digit (9) from the dividend to 4 and continue with: 49 / 245

Advancing to step 6:
The number 245 fits into 49 0 times, leaving a remainder of 49.
The next digit of our result is 0. 
Result so far: 3490.0
If we subtract 0 from 49, we get 49.
Append the next digit (9) from the dividend to 49 and continue with: 499 / 245

Going ahead to step 7:
245 goes into 499 2 times with a remainder of 9.
Use 2 as the next digit of our solution. 
Result so far: 34902.0
If we subtract 490 from 499, we get 9.
Take the next digit (1) from the dividend and append it to 9, then repeat: 91 / 245

On to step 8:
The number 245 fits into 91 0 times, leaving a remainder of 91.
Write down 0 as next digit of the result. 
Result so far: 349020.0
Deduct 0 from 91 and we're left with 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 9:
The number 245 fits into 910 3 times, leaving a remainder of 175.
Use 3 as the next digit of our solution. 
Result so far: 349020.3
The remainder is 175 after subtracting 735 from 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Let's proceed to step 10:
When dividing 1750 by 245, we get 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 349020.37
Deduct 1715 from 1750 and we're left with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 11:
When dividing 350 by 245, we get 1 with a remainder of 105.
The number 1 becomes the next digit in our result. 
Result so far: 349020.371
Subtract 245 from 350 to get 105.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

On to step 12:
245 can be fit into 1050 4 times, resulting in a remainder of 70.
Record the quotient 4 as the next digit in the result. 
Result so far: 349020.3714
If we subtract 980 from 1050, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Going ahead to step 13:
245 goes into 700 2 times with a remainder of 210.
Record the quotient 2 as the next digit in the result. 
Result so far: 349020.37142
The remainder is 210 after subtracting 490 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Moving on to step 14:
2100 divided by 245 is 8 with a remainder of 140.
Put 8 as the next digit of the answer. 
Result so far: 349020.371428
Deduct 1960 from 2100 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 15:
245 goes into 1400 5 times with a remainder of 175.
The number 5 becomes the next digit in our result. 
Result so far: 349020.3714285
If we take 1225 away from 1400, we end up 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.

Step 16:
1750 divided by 245 is 7 with a remainder of 35.
Record the quotient 7 as the next digit in the result. 
Result so far: 349020.37142857
If we take 1715 away from 1750, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

The final result is 349020.37142857 with a remainder of 3.5e-08.