80970485 divided by 420 
Our goal is to divide 80970485 by 420.

On to step 1:
420 goes into 8 0 times with 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.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 420

Going ahead to step 2:
80 divided by 420 is 0 with a remainder of 80.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 80 leaves us with 80.
Take the next digit (9) from the dividend and append it to 80, then repeat: 809 / 420

Let's proceed to step 3:
If we divide 809 by 420, we get 1 and a remainder of 389.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 420 away from 809, we end up with 389.
Include the next digit (7) from the dividend after 389, then repeat: 3897 / 420

Going ahead to step 4:
If we divide 3897 by 420, we get 9 and a remainder of 117.
Use 9 as the next digit of our solution. 
Result so far: 19.0
The remainder is 117 after subtracting 3780 from 3897.
Append the next digit (0) from the dividend to 117 and continue with: 1170 / 420

Let's proceed to step 5:
420 can be fit into 1170 2 times, resulting in a remainder of 330.
The next digit of our result is 2. 
Result so far: 192.0
If we take 840 away from 1170, we end up with 330.
Take the next digit (4) from the dividend and append it to 330, then repeat: 3304 / 420

Advancing to step 6:
420 goes into 3304 7 times with a remainder of 364.
Write down 7 as next digit of the result. 
Result so far: 1927.0
Subtracting 2940 from 3304 leaves us with 364.
Bring next digit (8) of the dividend behind the 364 and repeat the process: 3648 / 420

Going ahead to step 7:
If we divide 3648 by 420, we get 8 and a remainder of 288.
Record the quotient 8 as the next digit in the result. 
Result so far: 19278.0
Subtracting 3360 from 3648 leaves us with 288.
Take the next digit (5) from the dividend and append it to 288, then repeat: 2885 / 420

Moving on to step 8:
420 can be fit into 2885 6 times, resulting in a remainder of 365.
Put 6 as the next digit of the answer. 
Result so far: 192786.0
If we subtract 2520 from 2885, we get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

On to step 9:
The number 420 fits into 3650 8 times, leaving a remainder of 290.
Record the quotient 8 as the next digit in the result. 
Result so far: 192786.8
The remainder is 290 after subtracting 3360 from 3650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Advancing to step 10:
If we divide 2900 by 420, we get 6 and a remainder of 380.
Write down 6 as next digit of the result. 
Result so far: 192786.86
Subtracting 2520 from 2900 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Going ahead to step 11:
3800 divided by 420 is 9 with a remainder of 20.
Put 9 as the next digit of the answer. 
Result so far: 192786.869
If we take 3780 away from 3800, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 12:
200 divided by 420 is 0 with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 192786.869
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Going ahead to step 13:
2000 divided by 420 is 4 with a remainder of 320.
The next digit of our result is 4. 
Result so far: 192786.86904
Subtracting 1680 from 2000 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 14:
420 goes into 3200 7 times with a remainder of 260.
The number 7 becomes the next digit in our result. 
Result so far: 192786.869047
The remainder is 260 after subtracting 2940 from 3200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 15:
420 can be fit into 2600 6 times, resulting in a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 192786.8690476
Subtract 2520 from 2600 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 16:
If we divide 800 by 420, we get 1 and a remainder of 380.
The next digit of our result is 1. 
Result so far: 192786.86904761
Subtracting 420 from 800 leaves us with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final result is 192786.86904761 with a remainder of 3.8e-07.