257016 ÷ 20 
We're looking to find how many times 20 goes into 257016.

Advancing to step 1:
20 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 20

On to step 2:
The number 20 fits into 25 1 times, leaving a remainder of 5.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 20 from 25 to get 5.
Grab the next digit (7) from the dividend, add it to 5, then carry on: 57 / 20

On to step 3:
If we divide 57 by 20, we get 2 and a remainder of 17.
Put 2 as the next digit of the answer. 
Result so far: 12.0
The remainder is 17 after subtracting 40 from 57.
Grab the next digit (0) from the dividend, add it to 17, then carry on: 170 / 20

Moving on to step 4:
The number 20 fits into 170 8 times, leaving a remainder of 10.
Record the quotient 8 as the next digit in the result. 
Result so far: 128.0
If we subtract 160 from 170, we get 10.
Grab the next digit (1) from the dividend, add it to 10, then carry on: 101 / 20

On to step 5:
When dividing 101 by 20, we get 5 with a remainder of 1.
Write down 5 as next digit of the result. 
Result so far: 1285.0
If we subtract 100 from 101, we get 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 20

Advancing to step 6:
When dividing 16 by 20, we get 0 with a remainder of 16.
Put 0 as the next digit of the answer. 
Result so far: 12850.0
Subtracting 0 from 16 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.

Going ahead to step 7:
When dividing 160 by 20, we get 8 with a remainder of 0.
The next digit of our result is 8. 
Result so far: 12850.8
Deduct 160 from 160 and we're left 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.

Going ahead to step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 12850.8
Deduct 0 from 0 and we're left 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.

Let's proceed to step 9:
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: 12850.8
Deduct 0 from 0 and we're left 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.

The final result is 12850.8 with a remainder of 0.0.