We're dividing 6394109 by 425 
The aim is to understand the frequency of 425 in 6394109.

On to step 1:
425 goes into 6 0 times with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 425

Moving on to step 2:
63 divided by 425 is 0 with a remainder of 63.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 63, we get 63.
Grab the next digit (9) from the dividend, add it to 63, then carry on: 639 / 425

Advancing to step 3:
639 divided by 425 is 1 with a remainder of 214.
Use 1 as the next digit of our solution. 
Result so far: 1.0
If we take 425 away from 639, we end up with 214.
Grab the next digit (4) from the dividend, add it to 214, then carry on: 2144 / 425

Moving on to step 4:
If we divide 2144 by 425, we get 5 and a remainder of 19.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Subtract 2125 from 2144 to get 19.
Bring next digit (1) of the dividend behind the 19 and repeat the process: 191 / 425

On to step 5:
425 goes into 191 0 times with a remainder of 191.
The next digit of our result is 0. 
Result so far: 150.0
Deduct 0 from 191 and we're left with 191.
Fetch the next digit (0) from the dividend, attach it to 191 and continue: 1910 / 425

On to step 6:
The number 425 fits into 1910 4 times, leaving a remainder of 210.
Record the quotient 4 as the next digit in the result. 
Result so far: 1504.0
Subtracting 1700 from 1910 leaves us with 210.
Fetch the next digit (9) from the dividend, attach it to 210 and continue: 2109 / 425

Let's proceed to step 7:
The number 425 fits into 2109 4 times, leaving a remainder of 409.
Use 4 as the next digit of our solution. 
Result so far: 15044.0
Subtracting 1700 from 2109 leaves us with 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

Going ahead to step 8:
4090 divided by 425 is 9 with a remainder of 265.
The number 9 becomes the next digit in our result. 
Result so far: 15044.9
The remainder is 265 after subtracting 3825 from 4090.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Advancing to step 9:
If we divide 2650 by 425, we get 6 and a remainder of 100.
Use 6 as the next digit of our solution. 
Result so far: 15044.96
The remainder is 100 after subtracting 2550 from 2650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Step 10:
1000 divided by 425 is 2 with a remainder of 150.
Use 2 as the next digit of our solution. 
Result so far: 15044.962
Subtract 850 from 1000 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 11:
425 goes into 1500 3 times with a remainder of 225.
The next digit of our result is 3. 
Result so far: 15044.9623
Deduct 1275 from 1500 and we're left with 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 12:
425 goes into 2250 5 times with a remainder of 125.
Write down 5 as next digit of the result. 
Result so far: 15044.96235
Subtracting 2125 from 2250 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 13:
When dividing 1250 by 425, we get 2 with a remainder of 400.
Record the quotient 2 as the next digit in the result. 
Result so far: 15044.962352
If we subtract 850 from 1250, we get 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 14:
The number 425 fits into 4000 9 times, leaving a remainder of 175.
Put 9 as the next digit of the answer. 
Result so far: 15044.9623529
Subtract 3825 from 4000 to get 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 15:
When dividing 1750 by 425, we get 4 with a remainder of 50.
The next digit of our result is 4. 
Result so far: 15044.96235294
The remainder is 50 after subtracting 1700 from 1750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

The quotient of the division is 15044.96235294, and the remainder is 5e-08.