312750 divided by 20 
We want to divide 312750 by 20.

On to step 1:
20 can be fit into 3 0 times, resulting in a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 20

Step 2:
If we divide 31 by 20, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 20 from 31 to get 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 20

On to step 3:
20 can be fit into 112 5 times, resulting in a remainder of 12.
Use 5 as the next digit of our solution. 
Result so far: 15.0
Deduct 100 from 112 and we're left with 12.
Append the next digit (7) from the dividend to 12 and continue with: 127 / 20

Moving on to step 4:
The number 20 fits into 127 6 times, leaving a remainder of 7.
Put 6 as the next digit of the answer. 
Result so far: 156.0
Deduct 120 from 127 and we're left with 7.
Fetch the next digit (5) from the dividend, attach it to 7 and continue: 75 / 20

On to step 5:
20 can be fit into 75 3 times, resulting in a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 1563.0
If we subtract 60 from 75, we get 15.
Grab the next digit (0) from the dividend, add it to 15, then carry on: 150 / 20

Step 6:
The number 20 fits into 150 7 times, leaving a remainder of 10.
The next digit of our result is 7. 
Result so far: 15637.0
If we take 140 away from 150, 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.

On to step 7:
20 goes into 100 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 15637.5
If we take 100 away from 100, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 15637.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
0 divided by 20 is 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 15637.5
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 15637.5 and a remainder of 0.0.