30130164 ÷ 420 
The aim is to understand the frequency of 420 in 30130164.

Let's proceed to step 1:
420 goes into 3 0 times with a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (0) from the dividend to 3 and continue with: 30 / 420

Step 2:
30 divided by 420 is 0 with a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 30, we end up with 30.
Bring next digit (1) of the dividend behind the 30 and repeat the process: 301 / 420

Let's proceed to step 3:
420 can be fit into 301 0 times, resulting in a remainder of 301.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 301, we get 301.
Bring next digit (3) of the dividend behind the 301 and repeat the process: 3013 / 420

Step 4:
420 goes into 3013 7 times with a remainder of 73.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
The remainder is 73 after subtracting 2940 from 3013.
Append the next digit (0) from the dividend to 73 and continue with: 730 / 420

Let's proceed to step 5:
730 divided by 420 is 1 with a remainder of 310.
The next digit of our result is 1. 
Result so far: 71.0
If we subtract 420 from 730, we get 310.
Bring next digit (1) of the dividend behind the 310 and repeat the process: 3101 / 420

On to step 6:
When dividing 3101 by 420, we get 7 with a remainder of 161.
The next digit of our result is 7. 
Result so far: 717.0
Deduct 2940 from 3101 and we're left with 161.
Bring next digit (6) of the dividend behind the 161 and repeat the process: 1616 / 420

Step 7:
420 goes into 1616 3 times with a remainder of 356.
Put 3 as the next digit of the answer. 
Result so far: 7173.0
Subtracting 1260 from 1616 leaves us with 356.
Bring next digit (4) of the dividend behind the 356 and repeat the process: 3564 / 420

Let's proceed to step 8:
420 can be fit into 3564 8 times, resulting in a remainder of 204.
Use 8 as the next digit of our solution. 
Result so far: 71738.0
If we subtract 3360 from 3564, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Advancing to step 9:
2040 divided by 420 is 4 with a remainder of 360.
Put 4 as the next digit of the answer. 
Result so far: 71738.4
The remainder is 360 after subtracting 1680 from 2040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 10:
When dividing 3600 by 420, we get 8 with a remainder of 240.
Record the quotient 8 as the next digit in the result. 
Result so far: 71738.48
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.

Step 11:
2400 divided by 420 is 5 with a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 71738.485
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.

Step 12:
3000 divided by 420 is 7 with a remainder of 60.
The number 7 becomes the next digit in our result. 
Result so far: 71738.4857
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.

Step 13:
If we divide 600 by 420, we get 1 and a remainder of 180.
Use 1 as the next digit of our solution. 
Result so far: 71738.48571
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.

Let's proceed to step 14:
The number 420 fits into 1800 4 times, leaving a remainder of 120.
Record the quotient 4 as the next digit in the result. 
Result so far: 71738.485714
The remainder is 120 after subtracting 1680 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 15:
1200 divided by 420 is 2 with a remainder of 360.
Write down 2 as next digit of the result. 
Result so far: 71738.4857142
The remainder is 360 after subtracting 840 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Step 16:
When dividing 3600 by 420, we get 8 with a remainder of 240.
The next digit of our result is 8. 
Result so far: 71738.48571428
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.

In conclusion, the division gives 71738.48571428 with a balance of 2.4e-07.