Let's divide 86020929 by 420
We want to divide 86020929 by 420.

On to step 1:
420 can be fit into 8 0 times, resulting in a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 420

Step 2:
If we divide 86 by 420, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Include the next digit (0) from the dividend after 86, then repeat: 860 / 420

Moving on to step 3:
420 goes into 860 2 times with a remainder of 20.
Put 2 as the next digit of the answer. 
Result so far: 2.0
Deduct 840 from 860 and we're left with 20.
Bring next digit (2) of the dividend behind the 20 and repeat the process: 202 / 420

Moving on to step 4:
420 goes into 202 0 times with a remainder of 202.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Subtract 0 from 202 to get 202.
Fetch the next digit (0) from the dividend, attach it to 202 and continue: 2020 / 420

Going ahead to step 5:
The number 420 fits into 2020 4 times, leaving a remainder of 340.
Record the quotient 4 as the next digit in the result. 
Result so far: 204.0
Subtracting 1680 from 2020 leaves us with 340.
Fetch the next digit (9) from the dividend, attach it to 340 and continue: 3409 / 420

Advancing to step 6:
When dividing 3409 by 420, we get 8 with a remainder of 49.
Put 8 as the next digit of the answer. 
Result so far: 2048.0
Subtracting 3360 from 3409 leaves us with 49.
Take the next digit (2) from the dividend and append it to 49, then repeat: 492 / 420

Let's proceed to step 7:
492 divided by 420 is 1 with a remainder of 72.
Record the quotient 1 as the next digit in the result. 
Result so far: 20481.0
Deduct 420 from 492 and we're left with 72.
Fetch the next digit (9) from the dividend, attach it to 72 and continue: 729 / 420

Advancing to step 8:
420 can be fit into 729 1 times, resulting in a remainder of 309.
Write down 1 as next digit of the result. 
Result so far: 204811.0
The remainder is 309 after subtracting 420 from 729.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3090, and continue the process.

Let's proceed to step 9:
If we divide 3090 by 420, we get 7 and a remainder of 150.
Use 7 as the next digit of our solution. 
Result so far: 204811.7
Subtract 2940 from 3090 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

Moving on to step 10:
420 can be fit into 1500 3 times, resulting in a remainder of 240.
Use 3 as the next digit of our solution. 
Result so far: 204811.73
Subtract 1260 from 1500 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 11:
When dividing 2400 by 420, we get 5 with a remainder of 300.
The number 5 becomes the next digit in our result. 
Result so far: 204811.735
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.

Moving on to step 12:
When dividing 3000 by 420, we get 7 with a remainder of 60.
Write down 7 as next digit of the result. 
Result so far: 204811.7357
If we subtract 2940 from 3000, we 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.

On to step 13:
600 divided by 420 is 1 with a remainder of 180.
Put 1 as the next digit of the answer. 
Result so far: 204811.73571
Subtracting 420 from 600 leaves us 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 14:
420 goes into 1800 4 times with a remainder of 120.
Use 4 as the next digit of our solution. 
Result so far: 204811.735714
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 15:
The number 420 fits into 1200 2 times, leaving a remainder of 360.
The number 2 becomes the next digit in our result. 
Result so far: 204811.7357142
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.

Step 16:
When dividing 3600 by 420, we get 8 with a remainder of 240.
Use 8 as the next digit of our solution. 
Result so far: 204811.73571428
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.

The final outcome is 204811.73571428, with a leftover of 2.4e-07.