661675 ÷ 78 
Our goal is to divide 661675 by 78.

Going ahead to step 1:
The number 78 fits into 6 0 times, leaving a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 78

Let's proceed to step 2:
When dividing 66 by 78, we get 0 with a remainder of 66.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 66 and we're left with 66.
Grab the next digit (1) from the dividend, add it to 66, then carry on: 661 / 78

Advancing to step 3:
78 goes into 661 8 times with a remainder of 37.
The next digit of our result is 8. 
Result so far: 8.0
If we subtract 624 from 661, we get 37.
Take the next digit (6) from the dividend and append it to 37, then repeat: 376 / 78

On to step 4:
376 divided by 78 is 4 with a remainder of 64.
Use 4 as the next digit of our solution. 
Result so far: 84.0
Subtract 312 from 376 to get 64.
Append the next digit (7) from the dividend to 64 and continue with: 647 / 78

Advancing to step 5:
647 divided by 78 is 8 with a remainder of 23.
Put 8 as the next digit of the answer. 
Result so far: 848.0
The remainder is 23 after subtracting 624 from 647.
Grab the next digit (5) from the dividend, add it to 23, then carry on: 235 / 78

On to step 6:
If we divide 235 by 78, we get 3 and a remainder of 1.
Put 3 as the next digit of the answer. 
Result so far: 8483.0
Subtracting 234 from 235 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Step 7:
If we divide 10 by 78, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 8483.0
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 8:
78 can be fit into 100 1 times, resulting in a remainder of 22.
Record the quotient 1 as the next digit in the result. 
Result so far: 8483.01
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 9:
78 goes into 220 2 times with a remainder of 64.
The number 2 becomes the next digit in our result. 
Result so far: 8483.012
Subtracting 156 from 220 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Let's proceed to step 10:
78 goes into 640 8 times with a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 8483.0128
Subtracting 624 from 640 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
The number 78 fits into 160 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 8483.01282
If we subtract 156 from 160, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 12:
When dividing 40 by 78, we get 0 with a remainder of 40.
The next digit of our result is 0. 
Result so far: 8483.01282
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 13:
78 can be fit into 400 5 times, resulting in a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 8483.0128205
Deduct 390 from 400 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 14:
When dividing 100 by 78, we get 1 with a remainder of 22.
The number 1 becomes the next digit in our result. 
Result so far: 8483.01282051
Deduct 78 from 100 and we're left with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 8483.01282051, with a leftover of 2.2e-08.