Let's divide 80997540 by 420
Our goal is to divide 80997540 by 420.

On to step 1:
If we divide 8 by 420, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Bring next digit (0) of the dividend behind the 8 and repeat the process: 80 / 420

Step 2:
The number 420 fits into 80 0 times, leaving a remainder of 80.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Include the next digit (9) from the dividend after 80, then repeat: 809 / 420

Advancing to step 3:
When dividing 809 by 420, we get 1 with a remainder of 389.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 420 from 809 to get 389.
Take the next digit (9) from the dividend and append it to 389, then repeat: 3899 / 420

Step 4:
3899 divided by 420 is 9 with a remainder of 119.
Record the quotient 9 as the next digit in the result. 
Result so far: 19.0
If we subtract 3780 from 3899, we get 119.
Bring next digit (7) of the dividend behind the 119 and repeat the process: 1197 / 420

Step 5:
The number 420 fits into 1197 2 times, leaving a remainder of 357.
Put 2 as the next digit of the answer. 
Result so far: 192.0
Subtract 840 from 1197 to get 357.
Take the next digit (5) from the dividend and append it to 357, then repeat: 3575 / 420

Going ahead to step 6:
3575 divided by 420 is 8 with a remainder of 215.
Record the quotient 8 as the next digit in the result. 
Result so far: 1928.0
Subtracting 3360 from 3575 leaves us with 215.
Fetch the next digit (4) from the dividend, attach it to 215 and continue: 2154 / 420

Step 7:
If we divide 2154 by 420, we get 5 and a remainder of 54.
Record the quotient 5 as the next digit in the result. 
Result so far: 19285.0
If we subtract 2100 from 2154, we get 54.
Include the next digit (0) from the dividend after 54, then repeat: 540 / 420

Going ahead to step 8:
420 can be fit into 540 1 times, resulting in a remainder of 120.
Use 1 as the next digit of our solution. 
Result so far: 192851.0
If we take 420 away from 540, 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 9:
If we divide 1200 by 420, we get 2 and a remainder of 360.
Put 2 as the next digit of the answer. 
Result so far: 192851.2
Deduct 840 from 1200 and we're left 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 10:
When dividing 3600 by 420, we get 8 with a remainder of 240.
The number 8 becomes the next digit in our result. 
Result so far: 192851.28
The remainder is 240 after subtracting 3360 from 3600.
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 11:
If we divide 2400 by 420, we get 5 and a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 192851.285
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 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: 192851.2857
If we take 2940 away from 3000, we end up 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.

Going ahead to step 13:
420 can be fit into 600 1 times, resulting in a remainder of 180.
Record the quotient 1 as the next digit in the result. 
Result so far: 192851.28571
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.

Going ahead to step 14:
420 can be fit into 1800 4 times, resulting in a remainder of 120.
The number 4 becomes the next digit in our result. 
Result so far: 192851.285714
If we subtract 1680 from 1800, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Moving on to step 15:
The number 420 fits into 1200 2 times, leaving a remainder of 360.
Use 2 as the next digit of our solution. 
Result so far: 192851.2857142
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.

Advancing to step 16:
3600 divided by 420 is 8 with a remainder of 240.
The number 8 becomes the next digit in our result. 
Result so far: 192851.28571428
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.

After the division, we end up with 192851.28571428 and a remainder of 2.4e-07.