We look at the division of 52949847 by 420 
The aim is to understand the frequency of 420 in 52949847.

Let's proceed to step 1:
If we divide 5 by 420, we get 0 and a remainder of 5.
The number 0 becomes the next digit in our result. 
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 / 420

Going ahead to step 2:
The number 420 fits into 52 0 times, leaving a remainder of 52.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 52, we end up with 52.
Fetch the next digit (9) from the dividend, attach it to 52 and continue: 529 / 420

On to step 3:
The number 420 fits into 529 1 times, leaving a remainder of 109.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 420 from 529, we get 109.
Include the next digit (4) from the dividend after 109, then repeat: 1094 / 420

Advancing to step 4:
420 can be fit into 1094 2 times, resulting in a remainder of 254.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 840 from 1094 and we're left with 254.
Append the next digit (9) from the dividend to 254 and continue with: 2549 / 420

Step 5:
420 can be fit into 2549 6 times, resulting in a remainder of 29.
Use 6 as the next digit of our solution. 
Result so far: 126.0
Subtract 2520 from 2549 to get 29.
Bring next digit (8) of the dividend behind the 29 and repeat the process: 298 / 420

On to step 6:
420 goes into 298 0 times with a remainder of 298.
Put 0 as the next digit of the answer. 
Result so far: 1260.0
The remainder is 298 after subtracting 0 from 298.
Take the next digit (4) from the dividend and append it to 298, then repeat: 2984 / 420

Let's proceed to step 7:
420 goes into 2984 7 times with a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 12607.0
Subtracting 2940 from 2984 leaves us with 44.
Grab the next digit (7) from the dividend, add it to 44, then carry on: 447 / 420

On to step 8:
447 divided by 420 is 1 with a remainder of 27.
The next digit of our result is 1. 
Result so far: 126071.0
Deduct 420 from 447 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Advancing to step 9:
If we divide 270 by 420, we get 0 and a remainder of 270.
The number 0 becomes the next digit in our result. 
Result so far: 126071.0
Deduct 0 from 270 and we're left with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Advancing to step 10:
The number 420 fits into 2700 6 times, leaving a remainder of 180.
The next digit of our result is 6. 
Result so far: 126071.06
Deduct 2520 from 2700 and we're left with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Let's proceed to step 11:
420 goes into 1800 4 times with a remainder of 120.
Record the quotient 4 as the next digit in the result. 
Result so far: 126071.064
Deduct 1680 from 1800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 12:
If we divide 1200 by 420, we get 2 and a remainder of 360.
Record the quotient 2 as the next digit in the result. 
Result so far: 126071.0642
Subtract 840 from 1200 to get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 13:
420 can be fit into 3600 8 times, resulting in a remainder of 240.
The next digit of our result is 8. 
Result so far: 126071.06428
Deduct 3360 from 3600 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Moving on to step 14:
If we divide 2400 by 420, we get 5 and a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 126071.064285
The remainder is 300 after subtracting 2100 from 2400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 15:
420 goes into 3000 7 times with a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 126071.0642857
Subtracting 2940 from 3000 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 16:
600 divided by 420 is 1 with a remainder of 180.
Write down 1 as next digit of the result. 
Result so far: 126071.06428571
If we take 420 away from 600, we end up with 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

The final outcome is 126071.06428571, with a leftover of 1.8e-07.