We divide 16138986 by 780
We're looking to find how many times 780 goes into 16138986.

Going ahead to step 1:
780 goes into 1 0 times with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 780

Step 2:
If we divide 16 by 780, we get 0 and 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.
Grab the next digit (1) from the dividend, add it to 16, then carry on: 161 / 780

On to step 3:
When dividing 161 by 780, we get 0 with a remainder of 161.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 161 and we're left with 161.
Fetch the next digit (3) from the dividend, attach it to 161 and continue: 1613 / 780

Moving on to step 4:
780 goes into 1613 2 times with a remainder of 53.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
The remainder is 53 after subtracting 1560 from 1613.
Include the next digit (8) from the dividend after 53, then repeat: 538 / 780

Step 5:
780 can be fit into 538 0 times, resulting in a remainder of 538.
Write down 0 as next digit of the result. 
Result so far: 20.0
Subtracting 0 from 538 leaves us with 538.
Grab the next digit (9) from the dividend, add it to 538, then carry on: 5389 / 780

Step 6:
The number 780 fits into 5389 6 times, leaving a remainder of 709.
The next digit of our result is 6. 
Result so far: 206.0
Subtracting 4680 from 5389 leaves us with 709.
Grab the next digit (8) from the dividend, add it to 709, then carry on: 7098 / 780

Advancing to step 7:
If we divide 7098 by 780, we get 9 and a remainder of 78.
The number 9 becomes the next digit in our result. 
Result so far: 2069.0
Subtracting 7020 from 7098 leaves us with 78.
Bring next digit (6) of the dividend behind the 78 and repeat the process: 786 / 780

Advancing to step 8:
The number 780 fits into 786 1 times, leaving a remainder of 6.
The next digit of our result is 1. 
Result so far: 20691.0
If we take 780 away from 786, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Going ahead to step 9:
780 goes into 60 0 times with a remainder of 60.
The next digit of our result is 0. 
Result so far: 20691.0
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 10:
780 goes into 600 0 times with a remainder of 600.
Put 0 as the next digit of the answer. 
Result so far: 20691.0
If we subtract 0 from 600, we get 600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6000, and continue the process.

After the division, we end up with 20691.0 and a remainder of 0.6.