We look at the division of 72835998 by 421 
We want to divide 72835998 by 421.

On to step 1:
If we divide 7 by 421, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 421

Step 2:
If we divide 72 by 421, we get 0 and a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 72, we end up with 72.
Include the next digit (8) from the dividend after 72, then repeat: 728 / 421

Moving on to step 3:
421 can be fit into 728 1 times, resulting in a remainder of 307.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Deduct 421 from 728 and we're left with 307.
Append the next digit (3) from the dividend to 307 and continue with: 3073 / 421

Moving on to step 4:
The number 421 fits into 3073 7 times, leaving a remainder of 126.
Put 7 as the next digit of the answer. 
Result so far: 17.0
If we subtract 2947 from 3073, we get 126.
Append the next digit (5) from the dividend to 126 and continue with: 1265 / 421

Advancing to step 5:
If we divide 1265 by 421, we get 3 and a remainder of 2.
The next digit of our result is 3. 
Result so far: 173.0
If we subtract 1263 from 1265, we get 2.
Bring next digit (9) of the dividend behind the 2 and repeat the process: 29 / 421

Step 6:
29 divided by 421 is 0 with a remainder of 29.
The number 0 becomes the next digit in our result. 
Result so far: 1730.0
If we take 0 away from 29, we end up with 29.
Append the next digit (9) from the dividend to 29 and continue with: 299 / 421

Moving on to step 7:
299 divided by 421 is 0 with a remainder of 299.
The number 0 becomes the next digit in our result. 
Result so far: 17300.0
Subtracting 0 from 299 leaves us with 299.
Append the next digit (8) from the dividend to 299 and continue with: 2998 / 421

Let's proceed to step 8:
421 can be fit into 2998 7 times, resulting in a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 173007.0
Subtract 2947 from 2998 to get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Let's proceed to step 9:
When dividing 510 by 421, we get 1 with a remainder of 89.
Use 1 as the next digit of our solution. 
Result so far: 173007.1
If we subtract 421 from 510, we get 89.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Let's proceed to step 10:
If we divide 890 by 421, we get 2 and a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 173007.12
Subtract 842 from 890 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Moving on to step 11:
When dividing 480 by 421, we get 1 with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 173007.121
Deduct 421 from 480 and we're left with 59.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

On to step 12:
When dividing 590 by 421, we get 1 with a remainder of 169.
Record the quotient 1 as the next digit in the result. 
Result so far: 173007.1211
Deduct 421 from 590 and we're left with 169.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1690, and continue the process.

After the division, we end up with 173007.1211 and a remainder of 0.00169.