We divide 21159 by 85
We want to divide 21159 by 85.

Step 1:
The number 85 fits into 2 0 times, leaving a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 85

Let's proceed to step 2:
21 divided by 85 is 0 with a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Grab the next digit (1) from the dividend, add it to 21, then carry on: 211 / 85

Let's proceed to step 3:
When dividing 211 by 85, we get 2 with a remainder of 41.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 41 after subtracting 170 from 211.
Take the next digit (5) from the dividend and append it to 41, then repeat: 415 / 85

Step 4:
415 divided by 85 is 4 with a remainder of 75.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtract 340 from 415 to get 75.
Grab the next digit (9) from the dividend, add it to 75, then carry on: 759 / 85

Moving on to step 5:
If we divide 759 by 85, we get 8 and a remainder of 79.
The number 8 becomes the next digit in our result. 
Result so far: 248.0
The remainder is 79 after subtracting 680 from 759.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

On to step 6:
85 goes into 790 9 times with a remainder of 25.
Record the quotient 9 as the next digit in the result. 
Result so far: 248.9
The remainder is 25 after subtracting 765 from 790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Advancing to step 7:
If we divide 250 by 85, we get 2 and a remainder of 80.
Write down 2 as next digit of the result. 
Result so far: 248.92
If we subtract 170 from 250, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 8:
The number 85 fits into 800 9 times, leaving a remainder of 35.
Write down 9 as next digit of the result. 
Result so far: 248.929
If we take 765 away from 800, we end up with 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

Moving on to step 9:
85 goes into 350 4 times with a remainder of 10.
Write down 4 as next digit of the result. 
Result so far: 248.9294
If we subtract 340 from 350, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 10:
When dividing 100 by 85, we get 1 with a remainder of 15.
Record the quotient 1 as the next digit in the result. 
Result so far: 248.92941
The remainder is 15 after subtracting 85 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 11:
85 goes into 150 1 times with a remainder of 65.
The next digit of our result is 1. 
Result so far: 248.929411
If we take 85 away from 150, we end up with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Our division results in 248.929411 with a remaining 6.5e-06.