16394107 ÷ 423 
Let's see how many times 423 fits into 16394107.

Moving on to step 1:
423 can be fit into 1 0 times, resulting in a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 423

Let's proceed to step 2:
423 goes into 16 0 times with a remainder of 16.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Bring next digit (3) of the dividend behind the 16 and repeat the process: 163 / 423

Step 3:
If we divide 163 by 423, we get 0 and a remainder of 163.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 163, we get 163.
Grab the next digit (9) from the dividend, add it to 163, then carry on: 1639 / 423

Going ahead to step 4:
If we divide 1639 by 423, we get 3 and a remainder of 370.
Put 3 as the next digit of the answer. 
Result so far: 3.0
Subtract 1269 from 1639 to get 370.
Include the next digit (4) from the dividend after 370, then repeat: 3704 / 423

Moving on to step 5:
When dividing 3704 by 423, we get 8 with a remainder of 320.
Record the quotient 8 as the next digit in the result. 
Result so far: 38.0
Subtracting 3384 from 3704 leaves us with 320.
Include the next digit (1) from the dividend after 320, then repeat: 3201 / 423

On to step 6:
423 goes into 3201 7 times with a remainder of 240.
The next digit of our result is 7. 
Result so far: 387.0
Subtracting 2961 from 3201 leaves us with 240.
Bring next digit (0) of the dividend behind the 240 and repeat the process: 2400 / 423

Step 7:
If we divide 2400 by 423, we get 5 and a remainder of 285.
Write down 5 as next digit of the result. 
Result so far: 3875.0
Subtract 2115 from 2400 to get 285.
Append the next digit (7) from the dividend to 285 and continue with: 2857 / 423

Advancing to step 8:
The number 423 fits into 2857 6 times, leaving a remainder of 319.
Use 6 as the next digit of our solution. 
Result so far: 38756.0
Subtract 2538 from 2857 to get 319.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3190, and continue the process.

Moving on to step 9:
If we divide 3190 by 423, we get 7 and a remainder of 229.
Use 7 as the next digit of our solution. 
Result so far: 38756.7
The remainder is 229 after subtracting 2961 from 3190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

Going ahead to step 10:
423 can be fit into 2290 5 times, resulting in a remainder of 175.
The next digit of our result is 5. 
Result so far: 38756.75
Deduct 2115 from 2290 and we're left with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

On to step 11:
When dividing 1750 by 423, we get 4 with a remainder of 58.
Write down 4 as next digit of the result. 
Result so far: 38756.754
Subtract 1692 from 1750 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Moving on to step 12:
423 can be fit into 580 1 times, resulting in a remainder of 157.
Use 1 as the next digit of our solution. 
Result so far: 38756.7541
If we subtract 423 from 580, we get 157.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1570, and continue the process.

On to step 13:
1570 divided by 423 is 3 with a remainder of 301.
Use 3 as the next digit of our solution. 
Result so far: 38756.75413
If we subtract 1269 from 1570, we get 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

Going ahead to step 14:
When dividing 3010 by 423, we get 7 with a remainder of 49.
Use 7 as the next digit of our solution. 
Result so far: 38756.754137
Subtracting 2961 from 3010 leaves us with 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Step 15:
When dividing 490 by 423, we get 1 with a remainder of 67.
The number 1 becomes the next digit in our result. 
Result so far: 38756.7541371
If we subtract 423 from 490, we get 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 16:
423 can be fit into 670 1 times, resulting in a remainder of 247.
Write down 1 as next digit of the result. 
Result so far: 38756.75413711
If we subtract 423 from 670, we get 247.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2470, and continue the process.

The final result is 38756.75413711 with a remainder of 2.47e-07.