We divide 4287100 by 420
The aim is to understand the frequency of 420 in 4287100.

Going ahead to step 1:
4 divided by 420 is 0 with a remainder of 4.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 4 and we're left with 4.
Grab the next digit (2) from the dividend, add it to 4, then carry on: 42 / 420

Advancing to step 2:
42 divided by 420 is 0 with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 42 leaves us with 42.
Append the next digit (8) from the dividend to 42 and continue with: 428 / 420

On to step 3:
420 goes into 428 1 times with a remainder of 8.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 420 from 428 to get 8.
Take the next digit (7) from the dividend and append it to 8, then repeat: 87 / 420

Going ahead to step 4:
When dividing 87 by 420, we get 0 with a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 87, we get 87.
Fetch the next digit (1) from the dividend, attach it to 87 and continue: 871 / 420

Moving on to step 5:
420 goes into 871 2 times with a remainder of 31.
Put 2 as the next digit of the answer. 
Result so far: 102.0
The remainder is 31 after subtracting 840 from 871.
Bring next digit (0) of the dividend behind the 31 and repeat the process: 310 / 420

Step 6:
420 can be fit into 310 0 times, resulting in a remainder of 310.
The number 0 becomes the next digit in our result. 
Result so far: 1020.0
If we take 0 away from 310, we end up with 310.
Append the next digit (0) from the dividend to 310 and continue with: 3100 / 420

Going ahead to step 7:
3100 divided by 420 is 7 with a remainder of 160.
Use 7 as the next digit of our solution. 
Result so far: 10207.0
If we subtract 2940 from 3100, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Step 8:
If we divide 1600 by 420, we get 3 and a remainder of 340.
Record the quotient 3 as the next digit in the result. 
Result so far: 10207.3
If we take 1260 away from 1600, we end up with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Let's proceed to step 9:
420 can be fit into 3400 8 times, resulting in a remainder of 40.
Put 8 as the next digit of the answer. 
Result so far: 10207.38
If we take 3360 away from 3400, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 10:
When dividing 400 by 420, we get 0 with a remainder of 400.
The next digit of our result is 0. 
Result so far: 10207.38
The remainder is 400 after subtracting 0 from 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Let's proceed to step 11:
420 goes into 4000 9 times with a remainder of 220.
Use 9 as the next digit of our solution. 
Result so far: 10207.3809
Subtracting 3780 from 4000 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Moving on to step 12:
420 goes into 2200 5 times with a remainder of 100.
Write down 5 as next digit of the result. 
Result so far: 10207.38095
Subtract 2100 from 2200 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 13:
If we divide 1000 by 420, we get 2 and a remainder of 160.
Write down 2 as next digit of the result. 
Result so far: 10207.380952
If we subtract 840 from 1000, we get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Advancing to step 14:
When dividing 1600 by 420, we get 3 with a remainder of 340.
Use 3 as the next digit of our solution. 
Result so far: 10207.3809523
Deduct 1260 from 1600 and we're left with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Advancing to step 15:
When dividing 3400 by 420, we get 8 with a remainder of 40.
The next digit of our result is 8. 
Result so far: 10207.38095238
The remainder is 40 after subtracting 3360 from 3400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

In conclusion, the division gives 10207.38095238 with a balance of 4e-08.