We're dividing 52140570 by 425 
The aim is to understand the frequency of 425 in 52140570.

Advancing to step 1:
5 divided by 425 is 0 with a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 5 after subtracting 0 from 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 425

Going ahead to step 2:
425 goes into 52 0 times with a remainder of 52.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 52 to get 52.
Take the next digit (1) from the dividend and append it to 52, then repeat: 521 / 425

Advancing to step 3:
425 goes into 521 1 times with a remainder of 96.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 425 from 521 leaves us with 96.
Grab the next digit (4) from the dividend, add it to 96, then carry on: 964 / 425

Advancing to step 4:
964 divided by 425 is 2 with a remainder of 114.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 850 from 964 to get 114.
Grab the next digit (0) from the dividend, add it to 114, then carry on: 1140 / 425

Step 5:
When dividing 1140 by 425, we get 2 with a remainder of 290.
The number 2 becomes the next digit in our result. 
Result so far: 122.0
The remainder is 290 after subtracting 850 from 1140.
Bring next digit (5) of the dividend behind the 290 and repeat the process: 2905 / 425

Let's proceed to step 6:
425 goes into 2905 6 times with a remainder of 355.
Record the quotient 6 as the next digit in the result. 
Result so far: 1226.0
Deduct 2550 from 2905 and we're left with 355.
Bring next digit (7) of the dividend behind the 355 and repeat the process: 3557 / 425

On to step 7:
When dividing 3557 by 425, we get 8 with a remainder of 157.
The next digit of our result is 8. 
Result so far: 12268.0
If we take 3400 away from 3557, we end up with 157.
Bring next digit (0) of the dividend behind the 157 and repeat the process: 1570 / 425

Moving on to step 8:
425 goes into 1570 3 times with a remainder of 295.
Use 3 as the next digit of our solution. 
Result so far: 122683.0
Deduct 1275 from 1570 and we're left with 295.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2950, and continue the process.

Moving on to step 9:
425 can be fit into 2950 6 times, resulting in a remainder of 400.
Put 6 as the next digit of the answer. 
Result so far: 122683.6
If we take 2550 away from 2950, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 10:
When dividing 4000 by 425, we get 9 with a remainder of 175.
Use 9 as the next digit of our solution. 
Result so far: 122683.69
Subtracting 3825 from 4000 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.

Moving on to step 11:
If we divide 1750 by 425, we get 4 and a remainder of 50.
Write down 4 as next digit of the result. 
Result so far: 122683.694
Deduct 1700 from 1750 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Let's proceed to step 12:
If we divide 500 by 425, we get 1 and a remainder of 75.
Put 1 as the next digit of the answer. 
Result so far: 122683.6941
If we take 425 away from 500, we end up with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Step 13:
750 divided by 425 is 1 with a remainder of 325.
Write down 1 as next digit of the result. 
Result so far: 122683.69411
If we subtract 425 from 750, we get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

The quotient of the division is 122683.69411, and the remainder is 0.000325.