We look at the division of 13923737 by 390 
Let's see how many times 390 fits into 13923737.

Let's proceed to step 1:
If we divide 1 by 390, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 390

Going ahead to step 2:
If we divide 13 by 390, we get 0 and a remainder of 13.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 13 and we're left with 13.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 390

On to step 3:
If we divide 139 by 390, we get 0 and a remainder of 139.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 139 after subtracting 0 from 139.
Grab the next digit (2) from the dividend, add it to 139, then carry on: 1392 / 390

Advancing to step 4:
The number 390 fits into 1392 3 times, leaving a remainder of 222.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 222 after subtracting 1170 from 1392.
Take the next digit (3) from the dividend and append it to 222, then repeat: 2223 / 390

Going ahead to step 5:
The number 390 fits into 2223 5 times, leaving a remainder of 273.
Put 5 as the next digit of the answer. 
Result so far: 35.0
Deduct 1950 from 2223 and we're left with 273.
Include the next digit (7) from the dividend after 273, then repeat: 2737 / 390

Let's proceed to step 6:
390 goes into 2737 7 times with a remainder of 7.
Record the quotient 7 as the next digit in the result. 
Result so far: 357.0
If we subtract 2730 from 2737, we get 7.
Append the next digit (3) from the dividend to 7 and continue with: 73 / 390

Moving on to step 7:
390 goes into 73 0 times with a remainder of 73.
The number 0 becomes the next digit in our result. 
Result so far: 3570.0
Subtracting 0 from 73 leaves us with 73.
Bring next digit (7) of the dividend behind the 73 and repeat the process: 737 / 390

Going ahead to step 8:
If we divide 737 by 390, we get 1 and a remainder of 347.
Record the quotient 1 as the next digit in the result. 
Result so far: 35701.0
Subtracting 390 from 737 leaves us with 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Advancing to step 9:
When dividing 3470 by 390, we get 8 with a remainder of 350.
The next digit of our result is 8. 
Result so far: 35701.8
If we take 3120 away from 3470, we end up with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

Advancing to step 10:
The number 390 fits into 3500 8 times, leaving a remainder of 380.
Put 8 as the next digit of the answer. 
Result so far: 35701.88
Subtracting 3120 from 3500 leaves us 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.

The final outcome is 35701.88, with a leftover of 0.38.