We're dividing 58101195 by 420 
The aim is to understand the frequency of 420 in 58101195.

Let's proceed to step 1:
When dividing 5 by 420, we get 0 with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Fetch the next digit (8) from the dividend, attach it to 5 and continue: 58 / 420

Step 2:
When dividing 58 by 420, we get 0 with a remainder of 58.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 58, we end up with 58.
Append the next digit (1) from the dividend to 58 and continue with: 581 / 420

Advancing to step 3:
420 can be fit into 581 1 times, resulting in a remainder of 161.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 420 away from 581, we end up with 161.
Bring next digit (0) of the dividend behind the 161 and repeat the process: 1610 / 420

Step 4:
1610 divided by 420 is 3 with a remainder of 350.
Use 3 as the next digit of our solution. 
Result so far: 13.0
The remainder is 350 after subtracting 1260 from 1610.
Include the next digit (1) from the dividend after 350, then repeat: 3501 / 420

Moving on to step 5:
420 goes into 3501 8 times with a remainder of 141.
The next digit of our result is 8. 
Result so far: 138.0
Subtract 3360 from 3501 to get 141.
Append the next digit (1) from the dividend to 141 and continue with: 1411 / 420

Moving on to step 6:
1411 divided by 420 is 3 with a remainder of 151.
The number 3 becomes the next digit in our result. 
Result so far: 1383.0
If we subtract 1260 from 1411, we get 151.
Include the next digit (9) from the dividend after 151, then repeat: 1519 / 420

Step 7:
1519 divided by 420 is 3 with a remainder of 259.
Use 3 as the next digit of our solution. 
Result so far: 13833.0
If we take 1260 away from 1519, we end up with 259.
Fetch the next digit (5) from the dividend, attach it to 259 and continue: 2595 / 420

Advancing to step 8:
420 can be fit into 2595 6 times, resulting in a remainder of 75.
Write down 6 as next digit of the result. 
Result so far: 138336.0
If we take 2520 away from 2595, 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.

Advancing to step 9:
When dividing 750 by 420, we get 1 with a remainder of 330.
Use 1 as the next digit of our solution. 
Result so far: 138336.1
Deduct 420 from 750 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

Moving on to step 10:
If we divide 3300 by 420, we get 7 and a remainder of 360.
The next digit of our result is 7. 
Result so far: 138336.17
Subtract 2940 from 3300 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 11:
3600 divided by 420 is 8 with a remainder of 240.
Use 8 as the next digit of our solution. 
Result so far: 138336.178
Subtracting 3360 from 3600 leaves us 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.

On to step 12:
If we divide 2400 by 420, we get 5 and a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 138336.1785
Deduct 2100 from 2400 and we're left 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.

On to step 13:
420 can be fit into 3000 7 times, resulting in a remainder of 60.
Record the quotient 7 as the next digit in the result. 
Result so far: 138336.17857
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.

Step 14:
420 can be fit into 600 1 times, resulting in a remainder of 180.
The next digit of our result is 1. 
Result so far: 138336.178571
Deduct 420 from 600 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.

Step 15:
If we divide 1800 by 420, we get 4 and a remainder of 120.
Put 4 as the next digit of the answer. 
Result so far: 138336.1785714
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.

Advancing to step 16:
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: 138336.17857142
If we subtract 840 from 1200, we 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.

The quotient of the division is 138336.17857142, and the remainder is 3.6e-07.