858109 ÷ 49 
The aim is to understand the frequency of 49 in 858109.

Going ahead to step 1:
8 divided by 49 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (5) from the dividend and append it to 8, then repeat: 85 / 49

Moving on to step 2:
If we divide 85 by 49, we get 1 and a remainder of 36.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
The remainder is 36 after subtracting 49 from 85.
Grab the next digit (8) from the dividend, add it to 36, then carry on: 368 / 49

Advancing to step 3:
49 can be fit into 368 7 times, resulting in a remainder of 25.
Write down 7 as next digit of the result. 
Result so far: 17.0
Deduct 343 from 368 and we're left with 25.
Grab the next digit (1) from the dividend, add it to 25, then carry on: 251 / 49

Moving on to step 4:
The number 49 fits into 251 5 times, leaving a remainder of 6.
Use 5 as the next digit of our solution. 
Result so far: 175.0
If we take 245 away from 251, we end up with 6.
Bring next digit (0) of the dividend behind the 6 and repeat the process: 60 / 49

Moving on to step 5:
60 divided by 49 is 1 with a remainder of 11.
Write down 1 as next digit of the result. 
Result so far: 1751.0
The remainder is 11 after subtracting 49 from 60.
Append the next digit (9) from the dividend to 11 and continue with: 119 / 49

Step 6:
49 goes into 119 2 times with a remainder of 21.
Put 2 as the next digit of the answer. 
Result so far: 17512.0
Deduct 98 from 119 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 7:
When dividing 210 by 49, we get 4 with a remainder of 14.
The next digit of our result is 4. 
Result so far: 17512.4
The remainder is 14 after subtracting 196 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Let's proceed to step 8:
The number 49 fits into 140 2 times, leaving a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 17512.42
If we subtract 98 from 140, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 9:
When dividing 420 by 49, we get 8 with a remainder of 28.
The next digit of our result is 8. 
Result so far: 17512.428
The remainder is 28 after subtracting 392 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 10:
If we divide 280 by 49, we get 5 and a remainder of 35.
The next digit of our result is 5. 
Result so far: 17512.4285
The remainder is 35 after subtracting 245 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Advancing to step 11:
The number 49 fits into 350 7 times, leaving a remainder of 7.
Use 7 as the next digit of our solution. 
Result so far: 17512.42857
Deduct 343 from 350 and we're left with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 12:
The number 49 fits into 70 1 times, leaving a remainder of 21.
Write down 1 as next digit of the result. 
Result so far: 17512.428571
If we subtract 49 from 70, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Step 13:
If we divide 210 by 49, we get 4 and a remainder of 14.
Write down 4 as next digit of the result. 
Result so far: 17512.4285714
Subtracting 196 from 210 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Going ahead to step 14:
49 goes into 140 2 times with a remainder of 42.
Put 2 as the next digit of the answer. 
Result so far: 17512.42857142
The remainder is 42 after subtracting 98 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

The final result is 17512.42857142 with a remainder of 4.2e-08.