We look at the division of 420354 by 52 
The aim is to understand the frequency of 52 in 420354.

On to step 1:
52 goes into 4 0 times with a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Bring next digit (2) of the dividend behind the 4 and repeat the process: 42 / 52

Step 2:
52 can be fit into 42 0 times, resulting in a remainder of 42.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Fetch the next digit (0) from the dividend, attach it to 42 and continue: 420 / 52

Going ahead to step 3:
The number 52 fits into 420 8 times, leaving a remainder of 4.
The next digit of our result is 8. 
Result so far: 8.0
Subtracting 416 from 420 leaves us with 4.
Include the next digit (3) from the dividend after 4, then repeat: 43 / 52

Step 4:
43 divided by 52 is 0 with a remainder of 43.
Write down 0 as next digit of the result. 
Result so far: 80.0
If we subtract 0 from 43, we get 43.
Fetch the next digit (5) from the dividend, attach it to 43 and continue: 435 / 52

Step 5:
52 can be fit into 435 8 times, resulting in a remainder of 19.
The next digit of our result is 8. 
Result so far: 808.0
If we subtract 416 from 435, we get 19.
Fetch the next digit (4) from the dividend, attach it to 19 and continue: 194 / 52

Going ahead to step 6:
194 divided by 52 is 3 with a remainder of 38.
Use 3 as the next digit of our solution. 
Result so far: 8083.0
Subtract 156 from 194 to get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Step 7:
The number 52 fits into 380 7 times, leaving a remainder of 16.
Record the quotient 7 as the next digit in the result. 
Result so far: 8083.7
Subtracting 364 from 380 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 8:
160 divided by 52 is 3 with a remainder of 4.
The number 3 becomes the next digit in our result. 
Result so far: 8083.73
The remainder is 4 after subtracting 156 from 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 9:
The number 52 fits into 40 0 times, leaving a remainder of 40.
The next digit of our result is 0. 
Result so far: 8083.73
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
52 can be fit into 400 7 times, resulting in a remainder of 36.
Use 7 as the next digit of our solution. 
Result so far: 8083.7307
If we subtract 364 from 400, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 11:
When dividing 360 by 52, we get 6 with a remainder of 48.
Put 6 as the next digit of the answer. 
Result so far: 8083.73076
If we subtract 312 from 360, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 12:
When dividing 480 by 52, we get 9 with a remainder of 12.
The next digit of our result is 9. 
Result so far: 8083.730769
If we subtract 468 from 480, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
When dividing 120 by 52, we get 2 with a remainder of 16.
The number 2 becomes the next digit in our result. 
Result so far: 8083.7307692
If we take 104 away from 120, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 14:
The number 52 fits into 160 3 times, leaving a remainder of 4.
Write down 3 as next digit of the result. 
Result so far: 8083.73076923
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The quotient of the division is 8083.73076923, and the remainder is 4e-09.