We're dividing 510159 by 66 
We want to figure out the number of times 510159 can be divided by 66.

Step 1:
66 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 66

Step 2:
66 goes into 51 0 times with a remainder of 51.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 51 to get 51.
Append the next digit (0) from the dividend to 51 and continue with: 510 / 66

Going ahead to step 3:
If we divide 510 by 66, we get 7 and a remainder of 48.
The next digit of our result is 7. 
Result so far: 7.0
Deduct 462 from 510 and we're left with 48.
Grab the next digit (1) from the dividend, add it to 48, then carry on: 481 / 66

Advancing to step 4:
481 divided by 66 is 7 with a remainder of 19.
Put 7 as the next digit of the answer. 
Result so far: 77.0
Subtract 462 from 481 to get 19.
Take the next digit (5) from the dividend and append it to 19, then repeat: 195 / 66

On to step 5:
When dividing 195 by 66, we get 2 with a remainder of 63.
The number 2 becomes the next digit in our result. 
Result so far: 772.0
If we subtract 132 from 195, we get 63.
Bring next digit (9) of the dividend behind the 63 and repeat the process: 639 / 66

Advancing to step 6:
When dividing 639 by 66, we get 9 with a remainder of 45.
Put 9 as the next digit of the answer. 
Result so far: 7729.0
The remainder is 45 after subtracting 594 from 639.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Moving on to step 7:
The number 66 fits into 450 6 times, leaving a remainder of 54.
Write down 6 as next digit of the result. 
Result so far: 7729.6
Subtracting 396 from 450 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 8:
If we divide 540 by 66, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 7729.68
Subtracting 528 from 540 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 9:
66 goes into 120 1 times with a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 7729.681
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 10:
If we divide 540 by 66, we get 8 and a remainder of 12.
The next digit of our result is 8. 
Result so far: 7729.6818
If we subtract 528 from 540, we 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.

Let's proceed to step 11:
66 goes into 120 1 times with a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 7729.68181
The remainder is 54 after subtracting 66 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Let's proceed to step 12:
When dividing 540 by 66, we get 8 with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 7729.681818
If we subtract 528 from 540, we 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 13:
66 can be fit into 120 1 times, resulting in a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 7729.6818181
Deduct 66 from 120 and we're left with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Advancing to step 14:
When dividing 540 by 66, we get 8 with a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 7729.68181818
The remainder is 12 after subtracting 528 from 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The quotient of the division is 7729.68181818, and the remainder is 1.2e-08.