83030160 divided by 420 
The aim is to understand the frequency of 420 in 83030160.

Let's proceed to step 1:
If we divide 8 by 420, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (3) from the dividend and append it to 8, then repeat: 83 / 420

Let's proceed to step 2:
420 can be fit into 83 0 times, resulting in a remainder of 83.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 83 and we're left with 83.
Append the next digit (0) from the dividend to 83 and continue with: 830 / 420

Let's proceed to step 3:
If we divide 830 by 420, we get 1 and a remainder of 410.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 420 from 830 leaves us with 410.
Include the next digit (3) from the dividend after 410, then repeat: 4103 / 420

Let's proceed to step 4:
420 can be fit into 4103 9 times, resulting in a remainder of 323.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 3780 from 4103 and we're left with 323.
Fetch the next digit (0) from the dividend, attach it to 323 and continue: 3230 / 420

Advancing to step 5:
If we divide 3230 by 420, we get 7 and a remainder of 290.
Put 7 as the next digit of the answer. 
Result so far: 197.0
Subtract 2940 from 3230 to get 290.
Bring next digit (1) of the dividend behind the 290 and repeat the process: 2901 / 420

Advancing to step 6:
420 goes into 2901 6 times with a remainder of 381.
Write down 6 as next digit of the result. 
Result so far: 1976.0
Subtracting 2520 from 2901 leaves us with 381.
Bring next digit (6) of the dividend behind the 381 and repeat the process: 3816 / 420

Step 7:
3816 divided by 420 is 9 with a remainder of 36.
The number 9 becomes the next digit in our result. 
Result so far: 19769.0
If we subtract 3780 from 3816, we get 36.
Bring next digit (0) of the dividend behind the 36 and repeat the process: 360 / 420

Moving on to step 8:
The number 420 fits into 360 0 times, leaving a remainder of 360.
The next digit of our result is 0. 
Result so far: 197690.0
If we take 0 away from 360, we end up 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.

Advancing to step 9:
420 goes into 3600 8 times with a remainder of 240.
The next digit of our result is 8. 
Result so far: 197690.8
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.

Step 10:
420 goes into 2400 5 times with a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 197690.85
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.

Step 11:
The number 420 fits into 3000 7 times, leaving a remainder of 60.
Use 7 as the next digit of our solution. 
Result so far: 197690.857
Subtract 2940 from 3000 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 12:
600 divided by 420 is 1 with a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 197690.8571
The remainder is 180 after subtracting 420 from 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Step 13:
The number 420 fits into 1800 4 times, leaving a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 197690.85714
If we take 1680 away from 1800, we end up 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 14:
420 can be fit into 1200 2 times, resulting in a remainder of 360.
The next digit of our result is 2. 
Result so far: 197690.857142
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.

On to step 15:
420 goes into 3600 8 times with a remainder of 240.
Use 8 as the next digit of our solution. 
Result so far: 197690.8571428
If we subtract 3360 from 3600, we 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.

Advancing to step 16:
If we divide 2400 by 420, we get 5 and a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 197690.85714285
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.

After the division, we end up with 197690.85714285 and a remainder of 3e-07.