52002435 divided by 420 
The aim is to understand the frequency of 420 in 52002435.

Let's proceed to step 1:
420 goes into 5 0 times with a remainder of 5.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Include the next digit (2) from the dividend after 5, then repeat: 52 / 420

On to step 2:
420 can be fit into 52 0 times, resulting in a remainder of 52.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 52 to get 52.
Include the next digit (0) from the dividend after 52, then repeat: 520 / 420

Moving on to step 3:
520 divided by 420 is 1 with a remainder of 100.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 420 from 520 and we're left with 100.
Grab the next digit (0) from the dividend, add it to 100, then carry on: 1000 / 420

On to step 4:
When dividing 1000 by 420, we get 2 with a remainder of 160.
The next digit of our result is 2. 
Result so far: 12.0
If we take 840 away from 1000, we end up with 160.
Bring next digit (2) of the dividend behind the 160 and repeat the process: 1602 / 420

Going ahead to step 5:
When dividing 1602 by 420, we get 3 with a remainder of 342.
Record the quotient 3 as the next digit in the result. 
Result so far: 123.0
Subtracting 1260 from 1602 leaves us with 342.
Take the next digit (4) from the dividend and append it to 342, then repeat: 3424 / 420

On to step 6:
If we divide 3424 by 420, we get 8 and a remainder of 64.
Record the quotient 8 as the next digit in the result. 
Result so far: 1238.0
The remainder is 64 after subtracting 3360 from 3424.
Take the next digit (3) from the dividend and append it to 64, then repeat: 643 / 420

Step 7:
When dividing 643 by 420, we get 1 with a remainder of 223.
Use 1 as the next digit of our solution. 
Result so far: 12381.0
If we subtract 420 from 643, we get 223.
Append the next digit (5) from the dividend to 223 and continue with: 2235 / 420

Step 8:
When dividing 2235 by 420, we get 5 with a remainder of 135.
The next digit of our result is 5. 
Result so far: 123815.0
The remainder is 135 after subtracting 2100 from 2235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Going ahead to step 9:
If we divide 1350 by 420, we get 3 and a remainder of 90.
Write down 3 as next digit of the result. 
Result so far: 123815.3
Subtracting 1260 from 1350 leaves us with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 10:
If we divide 900 by 420, we get 2 and a remainder of 60.
Write down 2 as next digit of the result. 
Result so far: 123815.32
Subtracting 840 from 900 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.

On to step 11:
If we divide 600 by 420, we get 1 and a remainder of 180.
The next digit of our result is 1. 
Result so far: 123815.321
If we subtract 420 from 600, we get 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 12:
420 can be fit into 1800 4 times, resulting in a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 123815.3214
Subtracting 1680 from 1800 leaves us 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.

Step 13:
When dividing 1200 by 420, we get 2 with a remainder of 360.
Put 2 as the next digit of the answer. 
Result so far: 123815.32142
Subtracting 840 from 1200 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 14:
The number 420 fits into 3600 8 times, leaving a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 123815.321428
Subtract 3360 from 3600 to get 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 15:
When dividing 2400 by 420, we get 5 with a remainder of 300.
Write down 5 as next digit of the result. 
Result so far: 123815.3214285
If we take 2100 away from 2400, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Let's proceed to step 16:
3000 divided by 420 is 7 with a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 123815.32142857
Deduct 2940 from 3000 and we're left 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.

The quotient of the division is 123815.32142857, and the remainder is 6e-08.