518340 divided by 20 
We're looking to find how many times 20 goes into 518340.

Moving on to step 1:
20 goes into 5 0 times with a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 5, we end up with 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 20

On to step 2:
When dividing 51 by 20, we get 2 with a remainder of 11.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 40 away from 51, we end up with 11.
Grab the next digit (8) from the dividend, add it to 11, then carry on: 118 / 20

On to step 3:
118 divided by 20 is 5 with a remainder of 18.
Put 5 as the next digit of the answer. 
Result so far: 25.0
Subtracting 100 from 118 leaves us with 18.
Include the next digit (3) from the dividend after 18, then repeat: 183 / 20

Step 4:
If we divide 183 by 20, we get 9 and a remainder of 3.
Put 9 as the next digit of the answer. 
Result so far: 259.0
The remainder is 3 after subtracting 180 from 183.
Grab the next digit (4) from the dividend, add it to 3, then carry on: 34 / 20

Going ahead to step 5:
20 can be fit into 34 1 times, resulting in a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 2591.0
Deduct 20 from 34 and we're left with 14.
Fetch the next digit (0) from the dividend, attach it to 14 and continue: 140 / 20

On to step 6:
20 can be fit into 140 7 times, resulting in a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 25917.0
Subtracting 140 from 140 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.

Step 7:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25917.0
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.

Step 8:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 25917.0
Subtract 0 from 0 to get 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 quotient of the division is 25917.0, and the remainder is 0.0.