We're dividing 21453859 by 985 
Let's see how many times 985 fits into 21453859.

Let's proceed to step 1:
2 divided by 985 is 0 with a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Grab the next digit (1) from the dividend, add it to 2, then carry on: 21 / 985

Going ahead to step 2:
21 divided by 985 is 0 with a remainder of 21.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 21, we end up with 21.
Take the next digit (4) from the dividend and append it to 21, then repeat: 214 / 985

Let's proceed to step 3:
985 can be fit into 214 0 times, resulting in a remainder of 214.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 214 to get 214.
Include the next digit (5) from the dividend after 214, then repeat: 2145 / 985

Let's proceed to step 4:
2145 divided by 985 is 2 with a remainder of 175.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 1970 away from 2145, we end up with 175.
Take the next digit (3) from the dividend and append it to 175, then repeat: 1753 / 985

Moving on to step 5:
If we divide 1753 by 985, we get 1 and a remainder of 768.
The next digit of our result is 1. 
Result so far: 21.0
The remainder is 768 after subtracting 985 from 1753.
Append the next digit (8) from the dividend to 768 and continue with: 7688 / 985

Advancing to step 6:
If we divide 7688 by 985, we get 7 and a remainder of 793.
Record the quotient 7 as the next digit in the result. 
Result so far: 217.0
Subtract 6895 from 7688 to get 793.
Append the next digit (5) from the dividend to 793 and continue with: 7935 / 985

Moving on to step 7:
The number 985 fits into 7935 8 times, leaving a remainder of 55.
Write down 8 as next digit of the result. 
Result so far: 2178.0
If we subtract 7880 from 7935, we get 55.
Take the next digit (9) from the dividend and append it to 55, then repeat: 559 / 985

Let's proceed to step 8:
559 divided by 985 is 0 with a remainder of 559.
Use 0 as the next digit of our solution. 
Result so far: 21780.0
Subtracting 0 from 559 leaves us with 559.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5590, and continue the process.

Advancing to step 9:
If we divide 5590 by 985, we get 5 and a remainder of 665.
Record the quotient 5 as the next digit in the result. 
Result so far: 21780.5
Subtract 4925 from 5590 to get 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Moving on to step 10:
If we divide 6650 by 985, we get 6 and a remainder of 740.
Write down 6 as next digit of the result. 
Result so far: 21780.56
If we subtract 5910 from 6650, we get 740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7400, and continue the process.

Going ahead to step 11:
985 goes into 7400 7 times with a remainder of 505.
Put 7 as the next digit of the answer. 
Result so far: 21780.567
If we take 6895 away from 7400, we end up with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

On to step 12:
985 goes into 5050 5 times with a remainder of 125.
Use 5 as the next digit of our solution. 
Result so far: 21780.5675
Subtracting 4925 from 5050 leaves us with 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Step 13:
985 can be fit into 1250 1 times, resulting in a remainder of 265.
Write down 1 as next digit of the result. 
Result so far: 21780.56751
If we take 985 away from 1250, we end up with 265.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2650, and continue the process.

Moving on to step 14:
The number 985 fits into 2650 2 times, leaving a remainder of 680.
Record the quotient 2 as the next digit in the result. 
Result so far: 21780.567512
If we take 1970 away from 2650, we end up with 680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Step 15:
When dividing 6800 by 985, we get 6 with a remainder of 890.
The number 6 becomes the next digit in our result. 
Result so far: 21780.5675126
Deduct 5910 from 6800 and we're left with 890.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8900, and continue the process.

On to step 16:
985 can be fit into 8900 9 times, resulting in a remainder of 35.
The number 9 becomes the next digit in our result. 
Result so far: 21780.56751269
Subtract 8865 from 8900 to get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

After the division, we end up with 21780.56751269 and a remainder of 3.5e-08.