73920323 ÷ 420 
Let's see how many times 420 fits into 73920323.

Going ahead to step 1:
420 can be fit into 7 0 times, resulting in a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Take the next digit (3) from the dividend and append it to 7, then repeat: 73 / 420

Step 2:
420 goes into 73 0 times with a remainder of 73.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 73, we get 73.
Append the next digit (9) from the dividend to 73 and continue with: 739 / 420

Advancing to step 3:
When dividing 739 by 420, we get 1 with a remainder of 319.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 420 from 739 leaves us with 319.
Take the next digit (2) from the dividend and append it to 319, then repeat: 3192 / 420

On to step 4:
When dividing 3192 by 420, we get 7 with a remainder of 252.
Use 7 as the next digit of our solution. 
Result so far: 17.0
Deduct 2940 from 3192 and we're left with 252.
Include the next digit (0) from the dividend after 252, then repeat: 2520 / 420

Step 5:
420 can be fit into 2520 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 176.0
Subtracting 2520 from 2520 leaves us with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 420

Going ahead to step 6:
420 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 1760.0
Subtract 0 from 3 to get 3.
Fetch the next digit (2) from the dividend, attach it to 3 and continue: 32 / 420

On to step 7:
When dividing 32 by 420, we get 0 with a remainder of 32.
Write down 0 as next digit of the result. 
Result so far: 17600.0
Subtracting 0 from 32 leaves us with 32.
Include the next digit (3) from the dividend after 32, then repeat: 323 / 420

Advancing to step 8:
420 can be fit into 323 0 times, resulting in a remainder of 323.
The next digit of our result is 0. 
Result so far: 176000.0
The remainder is 323 after subtracting 0 from 323.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3230, and continue the process.

Moving on to step 9:
When dividing 3230 by 420, we get 7 with a remainder of 290.
Write down 7 as next digit of the result. 
Result so far: 176000.7
Subtracting 2940 from 3230 leaves us with 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:
The number 420 fits into 2900 6 times, leaving a remainder of 380.
Put 6 as the next digit of the answer. 
Result so far: 176000.76
The remainder is 380 after subtracting 2520 from 2900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Let's proceed to step 11:
The number 420 fits into 3800 9 times, leaving a remainder of 20.
The next digit of our result is 9. 
Result so far: 176000.769
If we subtract 3780 from 3800, we 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.

Moving on to step 12:
420 goes into 200 0 times with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 176000.769
If we take 0 away from 200, we end up 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.

Step 13:
If we divide 2000 by 420, we get 4 and a remainder of 320.
Put 4 as the next digit of the answer. 
Result so far: 176000.76904
The remainder is 320 after subtracting 1680 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 14:
The number 420 fits into 3200 7 times, leaving a remainder of 260.
The number 7 becomes the next digit in our result. 
Result so far: 176000.769047
If we subtract 2940 from 3200, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 15:
420 can be fit into 2600 6 times, resulting in a remainder of 80.
Record the quotient 6 as the next digit in the result. 
Result so far: 176000.7690476
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:
420 can be fit into 800 1 times, resulting in a remainder of 380.
The next digit of our result is 1. 
Result so far: 176000.76904761
The remainder is 380 after subtracting 420 from 800.
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 outcome is 176000.76904761, with a leftover of 3.8e-07.