10507578 divided by 666 
We want to divide 10507578 by 666.

Let's proceed to step 1:
When dividing 1 by 666, we get 0 with a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (0) from the dividend and append it to 1, then repeat: 10 / 666

Let's proceed to step 2:
666 goes into 10 0 times with a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 10, we end up with 10.
Grab the next digit (5) from the dividend, add it to 10, then carry on: 105 / 666

Going ahead to step 3:
The number 666 fits into 105 0 times, leaving a remainder of 105.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 105 and we're left with 105.
Include the next digit (0) from the dividend after 105, then repeat: 1050 / 666

Moving on to step 4:
When dividing 1050 by 666, we get 1 with a remainder of 384.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 666 from 1050 and we're left with 384.
Take the next digit (7) from the dividend and append it to 384, then repeat: 3847 / 666

Step 5:
666 goes into 3847 5 times with a remainder of 517.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Subtract 3330 from 3847 to get 517.
Bring next digit (5) of the dividend behind the 517 and repeat the process: 5175 / 666

On to step 6:
When dividing 5175 by 666, we get 7 with a remainder of 513.
Use 7 as the next digit of our solution. 
Result so far: 157.0
Subtracting 4662 from 5175 leaves us with 513.
Bring next digit (7) of the dividend behind the 513 and repeat the process: 5137 / 666

On to step 7:
666 goes into 5137 7 times with a remainder of 475.
Record the quotient 7 as the next digit in the result. 
Result so far: 1577.0
If we take 4662 away from 5137, we end up with 475.
Append the next digit (8) from the dividend to 475 and continue with: 4758 / 666

Step 8:
4758 divided by 666 is 7 with a remainder of 96.
The next digit of our result is 7. 
Result so far: 15777.0
Subtract 4662 from 4758 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Let's proceed to step 9:
666 can be fit into 960 1 times, resulting in a remainder of 294.
Put 1 as the next digit of the answer. 
Result so far: 15777.1
Subtract 666 from 960 to get 294.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2940, and continue the process.

Going ahead to step 10:
When dividing 2940 by 666, we get 4 with a remainder of 276.
The number 4 becomes the next digit in our result. 
Result so far: 15777.14
If we subtract 2664 from 2940, we get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Advancing to step 11:
When dividing 2760 by 666, we get 4 with a remainder of 96.
The next digit of our result is 4. 
Result so far: 15777.144
Deduct 2664 from 2760 and we're left with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The quotient of the division is 15777.144, and the remainder is 0.0096.