We look at the division of 78861567 by 669 
We're looking to find how many times 669 goes into 78861567.

On to step 1:
If we divide 7 by 669, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (8) from the dividend after 7, then repeat: 78 / 669

Going ahead to step 2:
78 divided by 669 is 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Take the next digit (8) from the dividend and append it to 78, then repeat: 788 / 669

Moving on to step 3:
If we divide 788 by 669, we get 1 and a remainder of 119.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 119 after subtracting 669 from 788.
Bring next digit (6) of the dividend behind the 119 and repeat the process: 1196 / 669

Moving on to step 4:
The number 669 fits into 1196 1 times, leaving a remainder of 527.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Deduct 669 from 1196 and we're left with 527.
Grab the next digit (1) from the dividend, add it to 527, then carry on: 5271 / 669

Step 5:
When dividing 5271 by 669, we get 7 with a remainder of 588.
Record the quotient 7 as the next digit in the result. 
Result so far: 117.0
The remainder is 588 after subtracting 4683 from 5271.
Include the next digit (5) from the dividend after 588, then repeat: 5885 / 669

Step 6:
When dividing 5885 by 669, we get 8 with a remainder of 533.
Put 8 as the next digit of the answer. 
Result so far: 1178.0
The remainder is 533 after subtracting 5352 from 5885.
Grab the next digit (6) from the dividend, add it to 533, then carry on: 5336 / 669

Advancing to step 7:
5336 divided by 669 is 7 with a remainder of 653.
Put 7 as the next digit of the answer. 
Result so far: 11787.0
Subtracting 4683 from 5336 leaves us with 653.
Fetch the next digit (7) from the dividend, attach it to 653 and continue: 6537 / 669

Advancing to step 8:
669 goes into 6537 9 times with a remainder of 516.
Record the quotient 9 as the next digit in the result. 
Result so far: 117879.0
Subtract 6021 from 6537 to get 516.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5160, and continue the process.

Going ahead to step 9:
If we divide 5160 by 669, we get 7 and a remainder of 477.
The number 7 becomes the next digit in our result. 
Result so far: 117879.7
Subtract 4683 from 5160 to get 477.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4770, and continue the process.

Advancing to step 10:
The number 669 fits into 4770 7 times, leaving a remainder of 87.
Write down 7 as next digit of the result. 
Result so far: 117879.77
If we subtract 4683 from 4770, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

The quotient of the division is 117879.77, and the remainder is 0.087.