We divide 317485 by 78
Our goal is to divide 317485 by 78.

On to step 1:
If we divide 3 by 78, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 78

On to step 2:
78 goes into 31 0 times with a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Bring next digit (7) of the dividend behind the 31 and repeat the process: 317 / 78

Advancing to step 3:
If we divide 317 by 78, we get 4 and a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Deduct 312 from 317 and we're left with 5.
Append the next digit (4) from the dividend to 5 and continue with: 54 / 78

On to step 4:
The number 78 fits into 54 0 times, leaving a remainder of 54.
Put 0 as the next digit of the answer. 
Result so far: 40.0
If we subtract 0 from 54, we get 54.
Include the next digit (8) from the dividend after 54, then repeat: 548 / 78

Let's proceed to step 5:
When dividing 548 by 78, we get 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 407.0
Subtract 546 from 548 to get 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 78

Advancing to step 6:
25 divided by 78 is 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 4070.0
If we subtract 0 from 25, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Moving on to step 7:
The number 78 fits into 250 3 times, leaving a remainder of 16.
Use 3 as the next digit of our solution. 
Result so far: 4070.3
Subtracting 234 from 250 leaves us 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.

Moving on to step 8:
When dividing 160 by 78, we get 2 with a remainder of 4.
Put 2 as the next digit of the answer. 
Result so far: 4070.32
Deduct 156 from 160 and we're left with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 9:
40 divided by 78 is 0 with a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 4070.32
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 10:
When dividing 400 by 78, we get 5 with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 4070.3205
If we take 390 away from 400, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Step 11:
78 can be fit into 100 1 times, resulting in a remainder of 22.
The next digit of our result is 1. 
Result so far: 4070.32051
The remainder is 22 after subtracting 78 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Step 12:
When dividing 220 by 78, we get 2 with a remainder of 64.
Record the quotient 2 as the next digit in the result. 
Result so far: 4070.320512
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.

Going ahead to step 13:
640 divided by 78 is 8 with a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 4070.3205128
The remainder is 16 after subtracting 624 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Let's proceed to step 14:
If we divide 160 by 78, we get 2 and a remainder of 4.
Record the quotient 2 as the next digit in the result. 
Result so far: 4070.32051282
Subtracting 156 from 160 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

The final outcome is 4070.32051282, with a leftover of 4e-09.