792121 ÷ 78 
Let's see how many times 78 fits into 792121.

Let's proceed to step 1:
78 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Append the next digit (9) from the dividend to 7 and continue with: 79 / 78

Moving on to step 2:
79 divided by 78 is 1 with a remainder of 1.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 78 away from 79, we end up with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 78

Moving on to step 3:
78 goes into 12 0 times with a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 10.0
The remainder is 12 after subtracting 0 from 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 78

Let's proceed to step 4:
78 goes into 121 1 times with a remainder of 43.
Write down 1 as next digit of the result. 
Result so far: 101.0
Deduct 78 from 121 and we're left with 43.
Grab the next digit (2) from the dividend, add it to 43, then carry on: 432 / 78

On to step 5:
432 divided by 78 is 5 with a remainder of 42.
Write down 5 as next digit of the result. 
Result so far: 1015.0
If we subtract 390 from 432, we get 42.
Fetch the next digit (1) from the dividend, attach it to 42 and continue: 421 / 78

Step 6:
When dividing 421 by 78, we get 5 with a remainder of 31.
Record the quotient 5 as the next digit in the result. 
Result so far: 10155.0
If we take 390 away from 421, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Step 7:
78 goes into 310 3 times with a remainder of 76.
Record the quotient 3 as the next digit in the result. 
Result so far: 10155.3
Subtract 234 from 310 to get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Going ahead to step 8:
The number 78 fits into 760 9 times, leaving a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 10155.39
Subtracting 702 from 760 leaves us with 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 9:
The number 78 fits into 580 7 times, leaving a remainder of 34.
The number 7 becomes the next digit in our result. 
Result so far: 10155.397
Deduct 546 from 580 and we're left with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 10:
The number 78 fits into 340 4 times, leaving a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 10155.3974
Subtract 312 from 340 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Let's proceed to step 11:
When dividing 280 by 78, we get 3 with a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 10155.39743
The remainder is 46 after subtracting 234 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

On to step 12:
78 goes into 460 5 times with a remainder of 70.
The number 5 becomes the next digit in our result. 
Result so far: 10155.397435
If we subtract 390 from 460, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 13:
78 goes into 700 8 times with a remainder of 76.
Write down 8 as next digit of the result. 
Result so far: 10155.3974358
If we take 624 away from 700, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Moving on to step 14:
760 divided by 78 is 9 with a remainder of 58.
Write down 9 as next digit of the result. 
Result so far: 10155.39743589
The remainder is 58 after subtracting 702 from 760.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 10155.39743589 with a remainder of 5.8e-08.