165390 ÷ 78 
We're looking to find how many times 78 goes into 165390.

Let's proceed to step 1:
78 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Append the next digit (6) from the dividend to 1 and continue with: 16 / 78

On 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
The remainder is 16 after subtracting 0 from 16.
Include the next digit (5) from the dividend after 16, then repeat: 165 / 78

On to step 3:
78 can be fit into 165 2 times, resulting in a remainder of 9.
Write down 2 as next digit of the result. 
Result so far: 2.0
The remainder is 9 after subtracting 156 from 165.
Fetch the next digit (3) from the dividend, attach it to 9 and continue: 93 / 78

Advancing to step 4:
When dividing 93 by 78, we get 1 with a remainder of 15.
Write down 1 as next digit of the result. 
Result so far: 21.0
Subtracting 78 from 93 leaves us with 15.
Bring next digit (9) of the dividend behind the 15 and repeat the process: 159 / 78

Let's proceed to step 5:
If we divide 159 by 78, we get 2 and a remainder of 3.
Write down 2 as next digit of the result. 
Result so far: 212.0
If we subtract 156 from 159, we get 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 78

Let's proceed to step 6:
If we divide 30 by 78, we get 0 and a remainder of 30.
The next digit of our result is 0. 
Result so far: 2120.0
Subtracting 0 from 30 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

On to step 7:
78 can be fit into 300 3 times, resulting in a remainder of 66.
Use 3 as the next digit of our solution. 
Result so far: 2120.3
Subtracting 234 from 300 leaves us with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 8:
78 goes into 660 8 times with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 2120.38
Subtracting 624 from 660 leaves us with 36.
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 9:
78 can be fit into 360 4 times, resulting in a remainder of 48.
The next digit of our result is 4. 
Result so far: 2120.384
If we subtract 312 from 360, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
If we divide 480 by 78, we get 6 and a remainder of 12.
Use 6 as the next digit of our solution. 
Result so far: 2120.3846
The remainder is 12 after subtracting 468 from 480.
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 11:
When dividing 120 by 78, we get 1 with a remainder of 42.
Use 1 as the next digit of our solution. 
Result so far: 2120.38461
The remainder is 42 after subtracting 78 from 120.
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 12:
When dividing 420 by 78, we get 5 with a remainder of 30.
The next digit of our result is 5. 
Result so far: 2120.384615
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.

Advancing to step 13:
If we divide 300 by 78, we get 3 and a remainder of 66.
Write down 3 as next digit of the result. 
Result so far: 2120.3846153
If we take 234 away from 300, we end up with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Step 14:
660 divided by 78 is 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 2120.38461538
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.

The final result is 2120.38461538 with a remainder of 3.6e-08.