We look at the division of 72275897 by 420 
Our goal is to divide 72275897 by 420.

Moving on to step 1:
If we divide 7 by 420, we get 0 and a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 420

Advancing to step 2:
If we divide 72 by 420, we get 0 and a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Bring next digit (2) of the dividend behind the 72 and repeat the process: 722 / 420

Moving on to step 3:
420 goes into 722 1 times with a remainder of 302.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 420 from 722, we get 302.
Append the next digit (7) from the dividend to 302 and continue with: 3027 / 420

Let's proceed to step 4:
The number 420 fits into 3027 7 times, leaving a remainder of 87.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we take 2940 away from 3027, we end up with 87.
Fetch the next digit (5) from the dividend, attach it to 87 and continue: 875 / 420

Going ahead to step 5:
When dividing 875 by 420, we get 2 with a remainder of 35.
Use 2 as the next digit of our solution. 
Result so far: 172.0
Subtract 840 from 875 to get 35.
Include the next digit (8) from the dividend after 35, then repeat: 358 / 420

Going ahead to step 6:
358 divided by 420 is 0 with a remainder of 358.
Record the quotient 0 as the next digit in the result. 
Result so far: 1720.0
If we take 0 away from 358, we end up with 358.
Append the next digit (9) from the dividend to 358 and continue with: 3589 / 420

Let's proceed to step 7:
420 can be fit into 3589 8 times, resulting in a remainder of 229.
Use 8 as the next digit of our solution. 
Result so far: 17208.0
If we take 3360 away from 3589, we end up with 229.
Bring next digit (7) of the dividend behind the 229 and repeat the process: 2297 / 420

Advancing to step 8:
The number 420 fits into 2297 5 times, leaving a remainder of 197.
Use 5 as the next digit of our solution. 
Result so far: 172085.0
The remainder is 197 after subtracting 2100 from 2297.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

On to step 9:
When dividing 1970 by 420, we get 4 with a remainder of 290.
Write down 4 as next digit of the result. 
Result so far: 172085.4
If we subtract 1680 from 1970, we get 290.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2900, and continue the process.

Going ahead to step 10:
When dividing 2900 by 420, we get 6 with a remainder of 380.
Put 6 as the next digit of the answer. 
Result so far: 172085.46
If we subtract 2520 from 2900, we get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

On 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: 172085.469
Subtract 3780 from 3800 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
When dividing 200 by 420, we get 0 with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 172085.469
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 13:
The number 420 fits into 2000 4 times, leaving a remainder of 320.
Put 4 as the next digit of the answer. 
Result so far: 172085.46904
Deduct 1680 from 2000 and we're left 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.

Step 14:
If we divide 3200 by 420, we get 7 and a remainder of 260.
Put 7 as the next digit of the answer. 
Result so far: 172085.469047
If we take 2940 away from 3200, we end up with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Let's proceed to step 15:
The number 420 fits into 2600 6 times, leaving a remainder of 80.
Put 6 as the next digit of the answer. 
Result so far: 172085.4690476
Subtracting 2520 from 2600 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 16:
When dividing 800 by 420, we get 1 with a remainder of 380.
Use 1 as the next digit of our solution. 
Result so far: 172085.46904761
Deduct 420 from 800 and we're left 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.

After the division, we end up with 172085.46904761 and a remainder of 3.8e-07.