We're dividing 72931596 by 420 
We want to figure out the number of times 72931596 can be divided by 420.

Advancing to step 1:
When dividing 7 by 420, we get 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Include the next digit (2) from the dividend after 7, then repeat: 72 / 420

On to step 2:
420 goes into 72 0 times with a remainder of 72.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 72 leaves us with 72.
Include the next digit (9) from the dividend after 72, then repeat: 729 / 420

Advancing to step 3:
When dividing 729 by 420, we get 1 with a remainder of 309.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 420 from 729 and we're left with 309.
Append the next digit (3) from the dividend to 309 and continue with: 3093 / 420

Step 4:
420 can be fit into 3093 7 times, resulting in a remainder of 153.
Record the quotient 7 as the next digit in the result. 
Result so far: 17.0
The remainder is 153 after subtracting 2940 from 3093.
Bring next digit (1) of the dividend behind the 153 and repeat the process: 1531 / 420

Let's proceed to step 5:
The number 420 fits into 1531 3 times, leaving a remainder of 271.
Use 3 as the next digit of our solution. 
Result so far: 173.0
Subtracting 1260 from 1531 leaves us with 271.
Fetch the next digit (5) from the dividend, attach it to 271 and continue: 2715 / 420

Step 6:
420 can be fit into 2715 6 times, resulting in a remainder of 195.
Use 6 as the next digit of our solution. 
Result so far: 1736.0
Deduct 2520 from 2715 and we're left with 195.
Bring next digit (9) of the dividend behind the 195 and repeat the process: 1959 / 420

Advancing to step 7:
1959 divided by 420 is 4 with a remainder of 279.
Record the quotient 4 as the next digit in the result. 
Result so far: 17364.0
The remainder is 279 after subtracting 1680 from 1959.
Bring next digit (6) of the dividend behind the 279 and repeat the process: 2796 / 420

Going ahead to step 8:
The number 420 fits into 2796 6 times, leaving a remainder of 276.
Record the quotient 6 as the next digit in the result. 
Result so far: 173646.0
If we take 2520 away from 2796, we end up with 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Let's proceed to step 9:
When dividing 2760 by 420, we get 6 with a remainder of 240.
The number 6 becomes the next digit in our result. 
Result so far: 173646.6
Subtract 2520 from 2760 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.

Step 10:
2400 divided by 420 is 5 with a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 173646.65
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.

Step 11:
3000 divided by 420 is 7 with a remainder of 60.
Put 7 as the next digit of the answer. 
Result so far: 173646.657
The remainder is 60 after subtracting 2940 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 12:
600 divided by 420 is 1 with a remainder of 180.
The number 1 becomes the next digit in our result. 
Result so far: 173646.6571
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.

On to step 13:
The number 420 fits into 1800 4 times, leaving a remainder of 120.
The next digit of our result is 4. 
Result so far: 173646.65714
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.

Let's proceed to step 14:
If we divide 1200 by 420, we get 2 and a remainder of 360.
Use 2 as the next digit of our solution. 
Result so far: 173646.657142
If we subtract 840 from 1200, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 15:
420 goes into 3600 8 times with a remainder of 240.
Put 8 as the next digit of the answer. 
Result so far: 173646.6571428
If we take 3360 away from 3600, we end up with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

Step 16:
420 goes into 2400 5 times with a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 173646.65714285
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.

Our division results in 173646.65714285 with a remaining 3e-07.