53985 ÷ 81 
We want to divide 53985 by 81.

On to step 1:
81 goes into 5 0 times with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Take the next digit (3) from the dividend and append it to 5, then repeat: 53 / 81

On to step 2:
When dividing 53 by 81, we get 0 with a remainder of 53.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 53 leaves us with 53.
Take the next digit (9) from the dividend and append it to 53, then repeat: 539 / 81

Advancing to step 3:
81 can be fit into 539 6 times, resulting in a remainder of 53.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtract 486 from 539 to get 53.
Fetch the next digit (8) from the dividend, attach it to 53 and continue: 538 / 81

Going ahead to step 4:
The number 81 fits into 538 6 times, leaving a remainder of 52.
Write down 6 as next digit of the result. 
Result so far: 66.0
Deduct 486 from 538 and we're left with 52.
Take the next digit (5) from the dividend and append it to 52, then repeat: 525 / 81

Moving on to step 5:
When dividing 525 by 81, we get 6 with a remainder of 39.
Record the quotient 6 as the next digit in the result. 
Result so far: 666.0
The remainder is 39 after subtracting 486 from 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Step 6:
81 can be fit into 390 4 times, resulting in a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 666.4
If we subtract 324 from 390, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

On to step 7:
81 goes into 660 8 times with a remainder of 12.
Record the quotient 8 as the next digit in the result. 
Result so far: 666.48
Subtract 648 from 660 to get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 8:
The number 81 fits into 120 1 times, leaving a remainder of 39.
The next digit of our result is 1. 
Result so far: 666.481
Subtracting 81 from 120 leaves us with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 9:
390 divided by 81 is 4 with a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 666.4814
If we subtract 324 from 390, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 10:
If we divide 660 by 81, we get 8 and a remainder of 12.
Use 8 as the next digit of our solution. 
Result so far: 666.48148
If we take 648 away from 660, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 11:
81 can be fit into 120 1 times, resulting in a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 666.481481
If we subtract 81 from 120, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Going ahead to step 12:
If we divide 390 by 81, we get 4 and a remainder of 66.
Write down 4 as next digit of the result. 
Result so far: 666.4814814
Deduct 324 from 390 and we're left with 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 13:
The number 81 fits into 660 8 times, leaving a remainder of 12.
Write down 8 as next digit of the result. 
Result so far: 666.48148148
If we subtract 648 from 660, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

The final outcome is 666.48148148, with a leftover of 1.2e-08.