661092 ÷ 78 
Our goal is to divide 661092 by 78.

Let's proceed to step 1:
78 goes into 6 0 times with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 78

Going ahead to step 2:
The number 78 fits into 66 0 times, leaving a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Bring next digit (1) of the dividend behind the 66 and repeat the process: 661 / 78

Let's proceed to step 3:
78 goes into 661 8 times with a remainder of 37.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 37 after subtracting 624 from 661.
Bring next digit (0) of the dividend behind the 37 and repeat the process: 370 / 78

Step 4:
The number 78 fits into 370 4 times, leaving a remainder of 58.
Write down 4 as next digit of the result. 
Result so far: 84.0
Subtract 312 from 370 to get 58.
Take the next digit (9) from the dividend and append it to 58, then repeat: 589 / 78

On to step 5:
If we divide 589 by 78, we get 7 and a remainder of 43.
Put 7 as the next digit of the answer. 
Result so far: 847.0
Subtracting 546 from 589 leaves us with 43.
Include the next digit (2) from the dividend after 43, then repeat: 432 / 78

Step 6:
78 can be fit into 432 5 times, resulting in a remainder of 42.
The number 5 becomes the next digit in our result. 
Result so far: 8475.0
The remainder is 42 after subtracting 390 from 432.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Going ahead to step 7:
If we divide 420 by 78, we get 5 and a remainder of 30.
The next digit of our result is 5. 
Result so far: 8475.5
If we subtract 390 from 420, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 8:
300 divided by 78 is 3 with a remainder of 66.
The next digit of our result is 3. 
Result so far: 8475.53
Subtract 234 from 300 to get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 9:
660 divided by 78 is 8 with a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 8475.538
If we subtract 624 from 660, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Let's proceed to step 10:
When dividing 360 by 78, we get 4 with a remainder of 48.
Record the quotient 4 as the next digit in the result. 
Result so far: 8475.5384
Subtract 312 from 360 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 11:
78 goes into 480 6 times with a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 8475.53846
Subtract 468 from 480 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 12:
The number 78 fits into 120 1 times, leaving a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 8475.538461
Subtracting 78 from 120 leaves us with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
When dividing 420 by 78, we get 5 with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 8475.5384615
The remainder is 30 after subtracting 390 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Going ahead to step 14:
When dividing 300 by 78, we get 3 with a remainder of 66.
Put 3 as the next digit of the answer. 
Result so far: 8475.53846153
Deduct 234 from 300 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Our division results in 8475.53846153 with a remaining 6.6e-08.