We're dividing 165099 by 78 
We want to divide 165099 by 78.

Moving on to step 1:
The number 78 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Bring next digit (6) of the dividend behind the 1 and repeat the process: 16 / 78

Advancing to step 2:
78 can be fit into 16 0 times, resulting in a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 16 leaves us with 16.
Grab the next digit (5) from the dividend, add it to 16, then carry on: 165 / 78

Moving on to step 3:
The number 78 fits into 165 2 times, leaving a remainder of 9.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 156 from 165 and we're left with 9.
Grab the next digit (0) from the dividend, add it to 9, then carry on: 90 / 78

Going ahead to step 4:
If we divide 90 by 78, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 78 from 90 leaves us with 12.
Include the next digit (9) from the dividend after 12, then repeat: 129 / 78

Advancing to step 5:
If we divide 129 by 78, we get 1 and a remainder of 51.
Use 1 as the next digit of our solution. 
Result so far: 211.0
If we subtract 78 from 129, we get 51.
Append the next digit (9) from the dividend to 51 and continue with: 519 / 78

Advancing to step 6:
If we divide 519 by 78, we get 6 and a remainder of 51.
Use 6 as the next digit of our solution. 
Result so far: 2116.0
If we subtract 468 from 519, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Moving on to step 7:
When dividing 510 by 78, we get 6 with a remainder of 42.
Record the quotient 6 as the next digit in the result. 
Result so far: 2116.6
If we subtract 468 from 510, we get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

On to step 8:
420 divided by 78 is 5 with a remainder of 30.
Record the quotient 5 as the next digit in the result. 
Result so far: 2116.65
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.

Step 9:
78 goes into 300 3 times with a remainder of 66.
The next digit of our result is 3. 
Result so far: 2116.653
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.

Going ahead to step 10:
If we divide 660 by 78, we get 8 and a remainder of 36.
Record the quotient 8 as the next digit in the result. 
Result so far: 2116.6538
The remainder is 36 after subtracting 624 from 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
78 goes into 360 4 times with a remainder of 48.
Put 4 as the next digit of the answer. 
Result so far: 2116.65384
Deduct 312 from 360 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 12:
480 divided by 78 is 6 with a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 2116.653846
Subtracting 468 from 480 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.

Moving on to step 13:
If we divide 120 by 78, we get 1 and a remainder of 42.
Record the quotient 1 as the next digit in the result. 
Result so far: 2116.6538461
Deduct 78 from 120 and we're left 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.

On to step 14:
If we divide 420 by 78, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 2116.65384615
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.

The final outcome is 2116.65384615, with a leftover of 3e-08.