Let's divide 16396420 by 390
We're looking to find how many times 390 goes into 16396420.

Let's proceed to step 1:
If we divide 1 by 390, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 390

Moving on to step 2:
16 divided by 390 is 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Include the next digit (3) from the dividend after 16, then repeat: 163 / 390

Moving on to step 3:
The number 390 fits into 163 0 times, leaving 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.
Include the next digit (9) from the dividend after 163, then repeat: 1639 / 390

Step 4:
The number 390 fits into 1639 4 times, leaving a remainder of 79.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
If we subtract 1560 from 1639, we get 79.
Take the next digit (6) from the dividend and append it to 79, then repeat: 796 / 390

Moving on to step 5:
390 can be fit into 796 2 times, resulting in a remainder of 16.
The next digit of our result is 2. 
Result so far: 42.0
The remainder is 16 after subtracting 780 from 796.
Append the next digit (4) from the dividend to 16 and continue with: 164 / 390

Going ahead to step 6:
When dividing 164 by 390, we get 0 with a remainder of 164.
Use 0 as the next digit of our solution. 
Result so far: 420.0
If we subtract 0 from 164, we get 164.
Include the next digit (2) from the dividend after 164, then repeat: 1642 / 390

Moving on to step 7:
1642 divided by 390 is 4 with a remainder of 82.
The next digit of our result is 4. 
Result so far: 4204.0
If we subtract 1560 from 1642, we get 82.
Fetch the next digit (0) from the dividend, attach it to 82 and continue: 820 / 390

Step 8:
The number 390 fits into 820 2 times, leaving a remainder of 40.
Record the quotient 2 as the next digit in the result. 
Result so far: 42042.0
Subtract 780 from 820 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Moving on to step 9:
400 divided by 390 is 1 with a remainder of 10.
Put 1 as the next digit of the answer. 
Result so far: 42042.1
If we take 390 away from 400, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 10:
If we divide 100 by 390, we get 0 and a remainder of 100.
Use 0 as the next digit of our solution. 
Result so far: 42042.1
The remainder is 100 after subtracting 0 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 11:
If we divide 1000 by 390, we get 2 and a remainder of 220.
Record the quotient 2 as the next digit in the result. 
Result so far: 42042.102
Subtracting 780 from 1000 leaves us with 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

On to step 12:
390 can be fit into 2200 5 times, resulting in a remainder of 250.
Put 5 as the next digit of the answer. 
Result so far: 42042.1025
If we take 1950 away from 2200, we end up with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 13:
When dividing 2500 by 390, we get 6 with a remainder of 160.
Record the quotient 6 as the next digit in the result. 
Result so far: 42042.10256
Subtract 2340 from 2500 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 14:
390 can be fit into 1600 4 times, resulting in a remainder of 40.
Put 4 as the next digit of the answer. 
Result so far: 42042.102564
The remainder is 40 after subtracting 1560 from 1600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Let's proceed to step 15:
390 can be fit into 400 1 times, resulting in a remainder of 10.
Record the quotient 1 as the next digit in the result. 
Result so far: 42042.1025641
Subtracting 390 from 400 leaves us with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 16:
When dividing 100 by 390, we get 0 with a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 42042.1025641
Subtracting 0 from 100 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

After the division, we end up with 42042.1025641 and a remainder of 1e-07.