We look at the division of 78354720 by 171 
Our goal is to divide 78354720 by 171.

Going ahead to step 1:
When dividing 7 by 171, we get 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 171

Going ahead to step 2:
If we divide 78 by 171, we get 0 and a remainder of 78.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Grab the next digit (3) from the dividend, add it to 78, then carry on: 783 / 171

On to step 3:
The number 171 fits into 783 4 times, leaving a remainder of 99.
Write down 4 as next digit of the result. 
Result so far: 4.0
The remainder is 99 after subtracting 684 from 783.
Fetch the next digit (5) from the dividend, attach it to 99 and continue: 995 / 171

Step 4:
171 goes into 995 5 times with a remainder of 140.
The next digit of our result is 5. 
Result so far: 45.0
Deduct 855 from 995 and we're left with 140.
Bring next digit (4) of the dividend behind the 140 and repeat the process: 1404 / 171

Let's proceed to step 5:
1404 divided by 171 is 8 with a remainder of 36.
The next digit of our result is 8. 
Result so far: 458.0
Subtract 1368 from 1404 to get 36.
Fetch the next digit (7) from the dividend, attach it to 36 and continue: 367 / 171

Step 6:
If we divide 367 by 171, we get 2 and a remainder of 25.
Put 2 as the next digit of the answer. 
Result so far: 4582.0
Deduct 342 from 367 and we're left with 25.
Append the next digit (2) from the dividend to 25 and continue with: 252 / 171

Let's proceed to step 7:
When dividing 252 by 171, we get 1 with a remainder of 81.
Record the quotient 1 as the next digit in the result. 
Result so far: 45821.0
If we subtract 171 from 252, we get 81.
Include the next digit (0) from the dividend after 81, then repeat: 810 / 171

Advancing to step 8:
171 goes into 810 4 times with a remainder of 126.
The number 4 becomes the next digit in our result. 
Result so far: 458214.0
If we take 684 away from 810, we end up with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Step 9:
171 goes into 1260 7 times with a remainder of 63.
Use 7 as the next digit of our solution. 
Result so far: 458214.7
Deduct 1197 from 1260 and we're left with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Advancing to step 10:
When dividing 630 by 171, we get 3 with a remainder of 117.
Put 3 as the next digit of the answer. 
Result so far: 458214.73
If we subtract 513 from 630, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Let's proceed to step 11:
1170 divided by 171 is 6 with a remainder of 144.
The next digit of our result is 6. 
Result so far: 458214.736
Subtracting 1026 from 1170 leaves us with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Moving on to step 12:
When dividing 1440 by 171, we get 8 with a remainder of 72.
Record the quotient 8 as the next digit in the result. 
Result so far: 458214.7368
If we subtract 1368 from 1440, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Going ahead to step 13:
When dividing 720 by 171, we get 4 with a remainder of 36.
Record the quotient 4 as the next digit in the result. 
Result so far: 458214.73684
If we take 684 away from 720, 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.

Moving on to step 14:
The number 171 fits into 360 2 times, leaving a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 458214.736842
The remainder is 18 after subtracting 342 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Step 15:
180 divided by 171 is 1 with a remainder of 9.
Write down 1 as next digit of the result. 
Result so far: 458214.7368421
The remainder is 9 after subtracting 171 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 16:
The number 171 fits into 90 0 times, leaving a remainder of 90.
Record the quotient 0 as the next digit in the result. 
Result so far: 458214.7368421
If we take 0 away from 90, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

After the division, we end up with 458214.7368421 and a remainder of 9e-08.