Let's divide 53428799 by 780
Let's see how many times 780 fits into 53428799.

On to step 1:
5 divided by 780 is 0 with a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 5 leaves us with 5.
Include the next digit (3) from the dividend after 5, then repeat: 53 / 780

Going ahead to step 2:
780 goes into 53 0 times with a remainder of 53.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 53 after subtracting 0 from 53.
Bring next digit (4) of the dividend behind the 53 and repeat the process: 534 / 780

Let's proceed to step 3:
780 goes into 534 0 times with a remainder of 534.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 534 leaves us with 534.
Bring next digit (2) of the dividend behind the 534 and repeat the process: 5342 / 780

Step 4:
When dividing 5342 by 780, we get 6 with a remainder of 662.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
The remainder is 662 after subtracting 4680 from 5342.
Grab the next digit (8) from the dividend, add it to 662, then carry on: 6628 / 780

Moving on to step 5:
780 can be fit into 6628 8 times, resulting in a remainder of 388.
Put 8 as the next digit of the answer. 
Result so far: 68.0
The remainder is 388 after subtracting 6240 from 6628.
Bring next digit (7) of the dividend behind the 388 and repeat the process: 3887 / 780

Step 6:
If we divide 3887 by 780, we get 4 and a remainder of 767.
The number 4 becomes the next digit in our result. 
Result so far: 684.0
Subtract 3120 from 3887 to get 767.
Bring next digit (9) of the dividend behind the 767 and repeat the process: 7679 / 780

Step 7:
780 can be fit into 7679 9 times, resulting in a remainder of 659.
The next digit of our result is 9. 
Result so far: 6849.0
Subtracting 7020 from 7679 leaves us with 659.
Grab the next digit (9) from the dividend, add it to 659, then carry on: 6599 / 780

Advancing to step 8:
6599 divided by 780 is 8 with a remainder of 359.
Record the quotient 8 as the next digit in the result. 
Result so far: 68498.0
The remainder is 359 after subtracting 6240 from 6599.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3590, and continue the process.

Step 9:
3590 divided by 780 is 4 with a remainder of 470.
Record the quotient 4 as the next digit in the result. 
Result so far: 68498.4
The remainder is 470 after subtracting 3120 from 3590.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

On to step 10:
If we divide 4700 by 780, we get 6 and a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 68498.46
Subtracting 4680 from 4700 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
780 goes into 200 0 times with a remainder of 200.
Use 0 as the next digit of our solution. 
Result so far: 68498.46
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
2000 divided by 780 is 2 with a remainder of 440.
Write down 2 as next digit of the result. 
Result so far: 68498.4602
Subtracting 1560 from 2000 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Advancing to step 13:
If we divide 4400 by 780, we get 5 and a remainder of 500.
The next digit of our result is 5. 
Result so far: 68498.46025
Deduct 3900 from 4400 and we're left with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 14:
If we divide 5000 by 780, we get 6 and a remainder of 320.
The next digit of our result is 6. 
Result so far: 68498.460256
Subtract 4680 from 5000 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 15:
780 can be fit into 3200 4 times, resulting in a remainder of 80.
Write down 4 as next digit of the result. 
Result so far: 68498.4602564
Subtracting 3120 from 3200 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 16:
When dividing 800 by 780, we get 1 with a remainder of 20.
The number 1 becomes the next digit in our result. 
Result so far: 68498.46025641
Subtracting 780 from 800 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 68498.46025641 and a remainder of 2e-08.