We're dividing 13504386 by 780 
We're looking to find how many times 780 goes into 13504386.

Moving on 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
Deduct 0 from 1 and we're left with 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 780

Advancing to step 2:
The number 780 fits into 13 0 times, leaving a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 13 after subtracting 0 from 13.
Fetch the next digit (5) from the dividend, attach it to 13 and continue: 135 / 780

Step 3:
135 divided by 780 is 0 with a remainder of 135.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 135 to get 135.
Take the next digit (0) from the dividend and append it to 135, then repeat: 1350 / 780

Moving on to step 4:
780 goes into 1350 1 times with a remainder of 570.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtracting 780 from 1350 leaves us with 570.
Include the next digit (4) from the dividend after 570, then repeat: 5704 / 780

Moving on to step 5:
780 goes into 5704 7 times with a remainder of 244.
The next digit of our result is 7. 
Result so far: 17.0
Subtract 5460 from 5704 to get 244.
Grab the next digit (3) from the dividend, add it to 244, then carry on: 2443 / 780

Step 6:
The number 780 fits into 2443 3 times, leaving a remainder of 103.
Record the quotient 3 as the next digit in the result. 
Result so far: 173.0
Deduct 2340 from 2443 and we're left with 103.
Grab the next digit (8) from the dividend, add it to 103, then carry on: 1038 / 780

On to step 7:
1038 divided by 780 is 1 with a remainder of 258.
Write down 1 as next digit of the result. 
Result so far: 1731.0
The remainder is 258 after subtracting 780 from 1038.
Fetch the next digit (6) from the dividend, attach it to 258 and continue: 2586 / 780

On to step 8:
780 goes into 2586 3 times with a remainder of 246.
Record the quotient 3 as the next digit in the result. 
Result so far: 17313.0
Subtracting 2340 from 2586 leaves us with 246.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2460, and continue the process.

Going ahead to step 9:
780 can be fit into 2460 3 times, resulting in a remainder of 120.
Put 3 as the next digit of the answer. 
Result so far: 17313.3
If we subtract 2340 from 2460, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 10:
If we divide 1200 by 780, we get 1 and a remainder of 420.
Record the quotient 1 as the next digit in the result. 
Result so far: 17313.31
The remainder is 420 after subtracting 780 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Going ahead to step 11:
If we divide 4200 by 780, we get 5 and a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 17313.315
Subtracting 3900 from 4200 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Step 12:
780 goes into 3000 3 times with a remainder of 660.
The next digit of our result is 3. 
Result so far: 17313.3153
If we take 2340 away from 3000, we end up with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Let's proceed to step 13:
780 goes into 6600 8 times with a remainder of 360.
Use 8 as the next digit of our solution. 
Result so far: 17313.31538
The remainder is 360 after subtracting 6240 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Let's proceed to step 14:
If we divide 3600 by 780, we get 4 and a remainder of 480.
The next digit of our result is 4. 
Result so far: 17313.315384
Subtracting 3120 from 3600 leaves us with 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

Let's proceed to step 15:
When dividing 4800 by 780, we get 6 with a remainder of 120.
The number 6 becomes the next digit in our result. 
Result so far: 17313.3153846
Deduct 4680 from 4800 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 16:
1200 divided by 780 is 1 with a remainder of 420.
Write down 1 as next digit of the result. 
Result so far: 17313.31538461
The remainder is 420 after subtracting 780 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

The final outcome is 17313.31538461, with a leftover of 4.2e-07.