We're dividing 80357948 by 86 
Let's see how many times 86 fits into 80357948.

Moving on to step 1:
86 goes into 8 0 times with a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Take the next digit (0) from the dividend and append it to 8, then repeat: 80 / 86

Advancing to step 2:
86 can be fit into 80 0 times, resulting in a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 80, we end up with 80.
Fetch the next digit (3) from the dividend, attach it to 80 and continue: 803 / 86

On to step 3:
803 divided by 86 is 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 9.0
Subtracting 774 from 803 leaves us with 29.
Grab the next digit (5) from the dividend, add it to 29, then carry on: 295 / 86

Going ahead to step 4:
If we divide 295 by 86, we get 3 and a remainder of 37.
The next digit of our result is 3. 
Result so far: 93.0
Subtracting 258 from 295 leaves us with 37.
Fetch the next digit (7) from the dividend, attach it to 37 and continue: 377 / 86

Going ahead to step 5:
86 goes into 377 4 times with a remainder of 33.
The next digit of our result is 4. 
Result so far: 934.0
Deduct 344 from 377 and we're left with 33.
Append the next digit (9) from the dividend to 33 and continue with: 339 / 86

Moving on to step 6:
86 can be fit into 339 3 times, resulting in a remainder of 81.
Put 3 as the next digit of the answer. 
Result so far: 9343.0
Subtract 258 from 339 to get 81.
Grab the next digit (4) from the dividend, add it to 81, then carry on: 814 / 86

Step 7:
When dividing 814 by 86, we get 9 with a remainder of 40.
Record the quotient 9 as the next digit in the result. 
Result so far: 93439.0
If we take 774 away from 814, we end up with 40.
Include the next digit (8) from the dividend after 40, then repeat: 408 / 86

Going ahead to step 8:
86 goes into 408 4 times with a remainder of 64.
Record the quotient 4 as the next digit in the result. 
Result so far: 934394.0
Subtract 344 from 408 to get 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 9:
The number 86 fits into 640 7 times, leaving a remainder of 38.
Use 7 as the next digit of our solution. 
Result so far: 934394.7
If we subtract 602 from 640, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

Advancing to step 10:
86 can be fit into 380 4 times, resulting in a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 934394.74
If we take 344 away from 380, we end up 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.

Advancing to step 11:
360 divided by 86 is 4 with a remainder of 16.
Use 4 as the next digit of our solution. 
Result so far: 934394.744
Deduct 344 from 360 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.

The final result is 934394.744 with a remainder of 0.0016.