17911351 ÷ 78 
We want to divide 17911351 by 78.

Moving on to step 1:
If we divide 1 by 78, we get 0 and a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (7) from the dividend to 1 and continue with: 17 / 78

Advancing to step 2:
The number 78 fits into 17 0 times, leaving a remainder of 17.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 17 and we're left with 17.
Bring next digit (9) of the dividend behind the 17 and repeat the process: 179 / 78

Step 3:
78 goes into 179 2 times with a remainder of 23.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 156 from 179, we get 23.
Include the next digit (1) from the dividend after 23, then repeat: 231 / 78

Step 4:
78 goes into 231 2 times with a remainder of 75.
The next digit of our result is 2. 
Result so far: 22.0
If we subtract 156 from 231, we get 75.
Fetch the next digit (1) from the dividend, attach it to 75 and continue: 751 / 78

Going ahead to step 5:
78 goes into 751 9 times with a remainder of 49.
Write down 9 as next digit of the result. 
Result so far: 229.0
The remainder is 49 after subtracting 702 from 751.
Take the next digit (3) from the dividend and append it to 49, then repeat: 493 / 78

Going ahead to step 6:
When dividing 493 by 78, we get 6 with a remainder of 25.
Use 6 as the next digit of our solution. 
Result so far: 2296.0
Subtract 468 from 493 to get 25.
Fetch the next digit (5) from the dividend, attach it to 25 and continue: 255 / 78

Advancing to step 7:
255 divided by 78 is 3 with a remainder of 21.
Write down 3 as next digit of the result. 
Result so far: 22963.0
Deduct 234 from 255 and we're left with 21.
Append the next digit (1) from the dividend to 21 and continue with: 211 / 78

Let's proceed to step 8:
78 goes into 211 2 times with a remainder of 55.
The next digit of our result is 2. 
Result so far: 229632.0
If we take 156 away from 211, we end up with 55.
Since there are no more digits in the dividend, we add a zero to the remainder making it 550, and continue the process.

Moving on to step 9:
When dividing 550 by 78, we get 7 with a remainder of 4.
Record the quotient 7 as the next digit in the result. 
Result so far: 229632.7
If we subtract 546 from 550, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
78 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 229632.7
If we subtract 0 from 40, we get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
If we divide 400 by 78, we get 5 and a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 229632.705
Subtract 390 from 400 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
When dividing 100 by 78, we get 1 with a remainder of 22.
Use 1 as the next digit of our solution. 
Result so far: 229632.7051
If we subtract 78 from 100, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 13:
The number 78 fits into 220 2 times, leaving a remainder of 64.
Put 2 as the next digit of the answer. 
Result so far: 229632.70512
If we take 156 away from 220, we end up with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 14:
The number 78 fits into 640 8 times, leaving a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 229632.705128
Deduct 624 from 640 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 15:
The number 78 fits into 160 2 times, leaving a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 229632.7051282
Subtract 156 from 160 to get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 16:
The number 78 fits into 40 0 times, leaving a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 229632.7051282
Subtract 0 from 40 to get 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

The final outcome is 229632.7051282, with a leftover of 4e-08.